[CalDAV] Sync failed with error (forbidden)

I am using em client for my yahoo email account.
I get this error:
[CalDAV] Sync of c___.s___@yahoo.com failed due to the following error: c____.s____@yahoo.com (Forbidden)

I deleted the account, I created again, yahoo has approved the login with a confirmation email.
But still after somw time I get the error again.

Could you please help me set it up propperly?

Hi I am wandering did I posted my question in the right place or is this question missing something?

Hi, I’m not sure why that’s happening to you but I’m getting the exact same problem too, not sure how to cure it, frustrating!

Same issue over here too

Error:
[CalDAV] Sync of ________@yahoo. com failed due to the following error: ________@yahoo. com (Forbidden)

Log:

03/08/2020 00:31:55 ________@yahoo. com IMAP Synchronizing folder list
03/08/2020 00:31:55 ________@yahoo. com CardDAV Synchronizing items: For folder ________@yahoo. com/Contacts
03/08/2020 00:31:55 ______@yahoo. com CalDAV Synchronizing items: For folder @yahoo. com/
03/08/2020 00:31:55 ________@yahoo. com CardDAV Synchronizing items: Sync of ________@yahoo. com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 2 items, 0 downloaded
03/08/2020 00:31:55 ________@yahoo. com CardDAV Synchronizing items: Done
03/08/2020 00:31:56 ________@yahoo. com [CalDAV] MailClient.Storage.Application.OperationException: Sync of @yahoo. com/ failed due to the following error: ________@yahoo. com (Forbidden)
03/08/2020 00:31:56 ________@yahoo. com CalDAV Synchronizing items: Sync of @yahoo. com/ finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
03/08/2020 00:31:56 ________@yahoo. com CalDAV Synchronizing items: Done
03/08/2020 00:31:56 ________@yahoo. com CalDAV Synchronizing items: For folder ________@yahoo. com
03/08/2020 00:31:57 ________@yahoo. com [CalDAV] MailClient.Storage.Application.OperationException: Sync of ________@yahoo. com failed due to the following error: ________@yahoo. com (Forbidden)
03/08/2020 00:31:57 ________@yahoo. com CalDAV Synchronizing items: Sync of ________@yahoo. com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
03/08/2020 00:31:57 ________@yahoo. com CalDAV Synchronizing items: Done
03/08/2020 00:31:57 ________@yahoo. com IMAP Synchronizing folder ‘/Inbox’
03/08/2020 00:32:02 ________@yahoo. com IMAP Uploading item(s) to folder ‘/Inbox’

Me too. Never had this with version 7. I’m not sure exactly when this started. It may have been after the first update after Version 8; may have been after I exited the app completely then restarted - eM Client often doesn’t like that, and spends 5-10 minutes looking for “corrupted database” (or similar) before coming up.

Version: 8.0.2951 (e2fe9f0)

Here is log:

2020-08-02 1:49:58 PM Online state: changed to online due to NetworkAvailability
2020-08-02 1:49:58 PM *******@yahoo.com CalDAV Synchronizing account properties: For host https://caldav.calendar.yahoo.com/.well-known/caldav
2020-08-02 1:49:58 PM *******@yahoo.com CardDAV Synchronizing account properties: For host https://carddav.address.yahoo.com/.well-known/carddav
2020-08-02 1:49:59 PM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing account properties: Done
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-02 1:50:00 PM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-02 1:50:00 PM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing subfolders: Done
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-02 1:50:00 PM *******@yahoo.com CalDAV Synchronizing account properties: Done
2020-08-02 1:50:00 PM *******@yahoo.com CalDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-02 1:50:00 PM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-02 1:50:00 PM *******@yahoo.com CalDAV Synchronizing subfolders: Done
2020-08-02 1:50:00 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 1:50:01 PM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-02 1:50:01 PM *******@yahoo.com POP3 Disconnected: Done
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 1 items, 0 downloaded
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 1:50:01 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 1:50:16 PM Online state: changed to offline due to NetworkAvailability
2020-08-02 5:32:03 PM Online state: changed to online due to NetworkAvailability
2020-08-02 5:32:03 PM *******@yahoo.com CardDAV Synchronizing account properties: For host https://carddav.address.yahoo.com/.well-known/carddav
2020-08-02 5:32:03 PM *******@yahoo.com CalDAV Synchronizing account properties: For host https://caldav.calendar.yahoo.com/.well-known/caldav
2020-08-02 5:32:04 PM *******@yahoo.com CardDAV Synchronizing account properties: Done
2020-08-02 5:32:04 PM *******@yahoo.com CardDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-02 5:32:04 PM *******@yahoo.com CardDAV Synchronizing subfolders: Done
2020-08-02 5:32:04 PM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-02 5:32:05 PM *******@yahoo.com CalDAV Synchronizing account properties: Done
2020-08-02 5:32:05 PM *******@yahoo.com CalDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-02 5:32:05 PM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-02 5:32:05 PM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-02 5:32:05 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Subfolder synchronization for folder “Calendar” failed due to the following error: Forbidden
2020-08-02 5:32:05 PM *******@yahoo.com CalDAV Synchronizing subfolders: Done
2020-08-02 5:32:05 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-02 5:32:06 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:32:06 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:32:06 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:32:06 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 5:32:06 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:32:06 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:32:06 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:41:40 PM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-02 5:41:40 PM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-02 5:41:40 PM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-02 5:41:40 PM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-02 5:41:40 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 5:41:40 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:41:40 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:41:41 PM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-02 5:41:41 PM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-02 5:41:41 PM *******@yahoo.com POP3 Downloading messages: From *******@yahoo.com
2020-08-02 5:41:44 PM *******@yahoo.com POP3 Deleting old messages: From *******@yahoo.com
2020-08-02 5:41:44 PM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-02 5:41:44 PM *******@yahoo.com POP3 Disconnected: Done
2020-08-02 5:51:40 PM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-02 5:51:40 PM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-02 5:51:40 PM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-02 5:51:40 PM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-02 5:51:40 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 5:51:40 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 5:51:40 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 5:51:41 PM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-02 5:51:41 PM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-02 5:51:43 PM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-02 5:51:43 PM *******@yahoo.com POP3 Disconnected: Done
2020-08-02 6:01:40 PM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-02 6:01:40 PM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-02 6:01:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-02 6:01:40 PM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-02 6:01:40 PM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-02 6:01:40 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 6:01:40 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 6:01:40 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 6:01:40 PM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-02 6:01:41 PM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-02 6:01:41 PM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-02 6:01:41 PM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-02 6:01:41 PM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-02 6:01:41 PM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-02 6:01:43 PM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-02 6:01:43 PM *******@yahoo.com POP3 Disconnected: Done
2020-08-03 9:36:56 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 9:36:56 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 9:36:56 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 9:36:56 AM Online state: changed to offline due to NetworkAvailability
2020-08-03 9:36:58 AM MailClient.Accounts.SocketException: Error when receiving from account *******@yahoo.com : No such host is known.
2020-08-03 9:36:58 AM at MailClient.Protocols.Pop3.Pop3ReceiveCommand.Execute(WorkerStatus status)
2020-08-03 9:36:58 AM at MailClient.Commands.Command.Process(WorkerStatus status)
2020-08-03 9:37:05 AM Online state: changed to online due to NetworkAvailability
2020-08-03 9:37:06 AM *******@yahoo.com CardDAV Synchronizing account properties: For host https://carddav.address.yahoo.com/.well-known/carddav
2020-08-03 9:37:06 AM *******@yahoo.com CalDAV Synchronizing account properties: For host https://caldav.calendar.yahoo.com/.well-known/caldav
2020-08-03 9:37:06 AM *******@yahoo.com CalDAV Synchronizing account properties: Done
2020-08-03 9:37:06 AM *******@yahoo.com CalDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-03 9:37:06 AM *******@yahoo.com CardDAV Synchronizing account properties: Done
2020-08-03 9:37:06 AM *******@yahoo.com CardDAV Synchronizing subfolders: For folder *******@yahoo.com
2020-08-03 9:37:06 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Subfolder synchronization for folder “Calendar” failed due to the following error: Forbidden
2020-08-03 9:37:06 AM *******@yahoo.com CalDAV Synchronizing subfolders: Done
2020-08-03 9:37:06 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 9:37:06 AM *******@yahoo.com CardDAV Synchronizing subfolders: Done
2020-08-03 9:37:06 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 9:37:07 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 9:37:07 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 9:37:07 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:37:07 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:37:07 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:37:07 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 9:37:07 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:37:07 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:37:07 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:40:18 AM Database backup: Started
2020-08-03 9:40:18 AM Database backup: Processing account *******@yahoo.com
2020-08-03 9:43:26 AM Database backup: Processing account Local Folders
2020-08-03 9:43:32 AM Database backup: Processing account Archive
2020-08-03 9:43:34 AM Database backup: Processing account Search Folders
2020-08-03 9:43:41 AM Database backup: Processing configuration data
2020-08-03 9:43:43 AM Database backup: Compressing the backup
2020-08-03 9:44:37 AM Database backup: Completed
2020-08-03 9:46:55 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 9:46:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 9:46:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 9:46:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 9:46:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 9:46:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:46:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:46:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:46:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 9:46:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:46:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:46:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:46:58 AM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-03 9:46:58 AM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-03 9:46:59 AM *******@yahoo.com POP3 Downloading messages: From *******@yahoo.com
2020-08-03 9:47:05 AM *******@yahoo.com POP3 Deleting old messages: From *******@yahoo.com
2020-08-03 9:47:05 AM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-03 9:47:05 AM *******@yahoo.com POP3 Disconnected: Done
2020-08-03 9:56:55 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 9:56:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 9:56:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 9:56:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 9:56:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 9:56:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 9:56:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 9:56:56 AM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-03 9:56:56 AM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-03 9:56:58 AM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-03 9:56:58 AM *******@yahoo.com POP3 Disconnected: Done
2020-08-03 10:06:55 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 10:06:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:06:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:06:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:06:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 10:06:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:06:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:06:56 AM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-03 10:06:56 AM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-03 10:06:58 AM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-03 10:06:58 AM *******@yahoo.com POP3 Disconnected: Done
2020-08-03 10:11:48 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:11:49 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:11:49 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 10:11:49 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:11:49 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:12:27 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:12:27 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:12:27 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:16:55 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:16:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:16:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:16:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:16:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:16:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:16:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:16:56 AM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-03 10:16:56 AM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-03 10:16:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:16:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:16:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:16:56 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 10:16:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:16:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:16:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:16:57 AM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-03 10:16:57 AM *******@yahoo.com POP3 Disconnected: Done
2020-08-03 10:26:55 AM *******@yahoo.com POP3 Connecting: To *******@yahoo.com
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:26:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: For folder *******@yahoo.com/Contacts
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: Sync of *******@yahoo.com/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 40 items, 0 downloaded
2020-08-03 10:26:55 AM *******@yahoo.com CardDAV Synchronizing items: Done
2020-08-03 10:26:55 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:26:55 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:26:55 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:26:55 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 10:26:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com/Robert Pronk
2020-08-03 10:26:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com/Robert Pronk failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com/Robert Pronk finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: For folder *******@yahoo.com
2020-08-03 10:26:56 AM *******@yahoo.com [CalDAV] MailClient.Storage.Application.OperationException: Sync of *******@yahoo.com failed due to the following error: *******@yahoo.com (Forbidden)
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Sync of *******@yahoo.com finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2020-08-03 10:26:56 AM *******@yahoo.com CalDAV Synchronizing items: Done
2020-08-03 10:31:29 AM *******@yahoo.com POP3 Connected: To *******@yahoo.com
2020-08-03 10:31:29 AM *******@yahoo.com POP3 Listing messages: From *******@yahoo.com
2020-08-03 10:31:31 AM *******@yahoo.com POP3 Disconnected: From *******@yahoo.com
2020-08-03 10:31:31 AM *******@yahoo.com POP3 Disconnected: Done

Okay I managed to email the eM Client guys and they told me following…

Hi Mark,
this is a new Yahoo bug we recently encountered where Yahoo rejects eM Client access to the Calendar.
We are working on a fix.
In the meantime I can unfortunately only recommend disabling the calendar (CalDAV) service for your account in Menu>Accounts or hiding the errors.

Same thing happening to me too on version 8 uninstalled and reinstalled, still happening
B