Can’t setup Yahoo on EM Client Mac

Yahoo Mail does not connect on EM Client on setup. I just see a red triangle. The list of folders were downloaded from Yahoo, but no emails. I installed the latest version of EM Client. I have deleted the Yahoo id and retried multiple times.

Yahoo Mail works fine with the default Mac email client.

What version of eM Client are you using ?

Also what Mac OS version do you have ?

Also are you using Yahoo as IMAP or POP ?

If you are using IMAP, are you using the automatic account wizard, and do you click allow at the end of the wizard to give eM Client access to your Yahoo account ?

EM Client 10.0.3351 (1554a45)
MacOS 14.6
Auto setup with Yahoo. imap.mail.yahoo.com

Did you click allow at the end of the wizard to give eM Client access to your Yahoo account ? which should then have returned to eM Client. So just want to check if that worked or not.

Also click the dropdown arrow on the right of Refresh and click “Show Operations”.

Then click the Log Tab and look for any obvious errors and paste them in this thread. We might then be able to see why it’s not connecting.

Yes on Yahoo.
7:36:26 AM [email protected] [IMAP] MailClient.Accounts.ConnectionException: Synchronizing folder ‘[email protected]/Inbox’ failed due to the following error: Lost connection with server
—> MailClient.Imap.Base.ConnectionLostException: Lost connection with server
at MailClient.Imap.Base.Extensions.<>c__DisplayClass30_0.<g__SlowAsyncPath|1>d.MoveNext()
— End of stack trace from previous location —
at MailClient.Imap.Base.Connection.ReceiveAsync()
Exception_EndOfInnerExceptionStack
at MailClient.Protocols.Imap.ImapActionCommand.ExecuteInternalSync(WorkerStatus status)
at MailClient.Protocols.Imap.ImapActionCommand.Execute(WorkerStatus status)
at MailClient.Commands.Command.Process(WorkerStatus status)
— End of stack trace from previous location —
at MailClient.Protocols.Imap.ImapAccount.SynchronizeIntAsync(Boolean forced)
at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass22_0.<b__0>d.MoveNext()
AccountId = 8f674a93-5e47-4018-97dd-20e531d3d178
AccountName = [email protected]
IMAP_SERVER_TYPE = Yahoo
RunInPlace = False
EnqueuedStackTrace =
at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass40_1.<EnqueueSynchronize>g__RunSynchronize|2() at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass40_0.b__0()
at MailClient.Protocols.Common.AccountBase.RunIfOnline(Action actionIfOnline, Action actionIfOffline)
at MailClient.Protocols.Common.ItemSynchronizer2.EnqueueSynchronize(Folder folder, Boolean fast, CancellationToken cancellationToken, Action1 completed)
at MailClient.Protocols.Common.ItemSynchronizer2.Synchronize(Folder folder, SynchronizationPriority priority, Action1 completed)
at MailClient.Storage.Application.ItemCollection2.Synchronize(SynchronizationPriority priority, Action1 completed, Boolean fromUI)
at MailClient.Storage.Application.ItemCollection2.SynchronizeAsync(Boolean forced, Boolean fromUI) at MailClient.Storage.Application.Folder.SynchronizeAsync(Boolean forced, Boolean fromUI) at MailClient.Protocols.Imap.ImapAccount.SynchronizeIntAsync(Boolean forced) at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine) at MailClient.Protocols.Imap.ImapAccount.SynchronizeIntAsync(Boolean forced) at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass22_0.<<SynchronizeAsync>b__0>d.MoveNext() at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine) at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass22_0.<SynchronizeAsync>b__0() at System.Threading.Tasks.Task1.InnerInvoke()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
at System.Threading.ThreadPoolWorkQueue.DispatchItemWithAutoreleasePool(Object workItem, Thread currentThread)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Threading.Thread.StartCallback()
GUIStatus_Exception_Reported = True

Ok that is strange you are loosing connection.

These are my example Yahoo IMAP Mail account settings i use on the same Mac 14.6 Sonoma and same eM Client V10.0.3351 . See end of post below for screenshot.

So if you already have those same settings below as in the example screenshot, and getting lost connection with the server and removing and re-adding the Yahoo account makes no differance, sounds like either something possibly installed locally on the Mac interferring with eM Client, or some physical connection issue between your internet connection and the Yahoo mail server.

So if you are running any optionally installed eg: Firewall / Security programs, or Optionally installed Antivirus programs or Optional VPN, try completely disabling that to test.

If you don’t have any optional programs like that installed, then try powering off your Internet modem and computer and any network other devices in your house / premises and try again.

Apart from that i would suggest to eg: open up the Terminal on your Mac in Utilities and see if you can “ping the Yahoo Mail Server ok” and see “if it keeps pinging without loosing connection”. If that pings and replies constantly “without stopping” then you should be able to get mail with eM Client. If you carn’t constantly ping the Yahoo mail server, then there is a physical problem somewhere between you and the Yahoo Server.

Lastly, could also be that your physical Internet connection is delaying / lagging and not constant enough which could then also cause Lost connection to the server if it got to slow or laggy. So make sure your physical connection is constant. Do a speedtest to check your receiving speed. A good site to test is eg: speedtest.net . My connection is 45-50mbps constant even on Wireless.

The internet connection is fine. All other apps and other devices are running normally. 90.99
Mbps download and 10.44 Mbps upload.

I have Avast! One running on the MacBook. Yahoo Mail works fine on MacOS mail client. I tried disabling Web Guard etc on Avast. Made no difference. I am trying eM Client again after deleting Avast to see what happens.

I have uninstalled Avast security. The problem is still there, though eM seems to sync some of the messages from Yahoo, then stops

2:56:05 PM [email protected] [IMAP] MailClient.Accounts.AbortedException: Connection could not be created while going offline.
—> System.ObjectDisposedException: ObjectDisposed_Generic
ObjectDisposed_ObjectName_Name, System.Threading.SemaphoreSlim
at System.Threading.SemaphoreSlim.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at MailClient.Utils.Threading.AsyncLock.LockAsync(CancellationToken cancellationToken)
at MailClient.Imap.Base.Connection.ConnectAsync(Func2 getStream, CancellationToken cancellationToken) at MailClient.Protocols.Imap.ConnectionPoolEntry.ConnectInternalAsync(CancellationToken cancellationToken) at MailClient.Protocols.Imap.ConnectionPoolEntry.ConnectInternalAsync(CancellationToken cancellationToken) at MailClient.Protocols.Imap.ConnectionPool.AcquireConnectionAsync(Folder mailFolder, Boolean noSelect) Exception_EndOfInnerExceptionStack at MailClient.Protocols.Imap.ConnectionPool.AcquireConnectionAsync(Folder mailFolder, Boolean noSelect) at MailClient.Protocols.Imap.ConnectionContext.CreateContextAsync(ImapAccount account, Folder folder, Boolean noSelect) at MailClient.Protocols.Imap.ImapMailSynchronizer.<>c__DisplayClass28_0.<<SynchronizeMessagesAsync>g__CreateConnectionContextAsync|0>d.MoveNext() --- End of stack trace from previous location --- at MailClient.Protocols.Imap.ImapMailSynchronizer.SynchronizeMessagesAsync(IItemSynchronizeContext1 synchronizeContext, Folder folder, Boolean fast, CancellationToken cancellationToken)
at MailClient.Protocols.Imap.ImapMailSynchronizer.Synchronize(IItemSynchronizeContext1 synchronizeContext, Folder folder, CancellationToken cancellationToken) at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass40_2.b__6(WorkerStatus status, CancellationToken ct)
at MailClient.Protocols.Imap.ImapActionCommand.ExecuteInternalSync(WorkerStatus status)
at MailClient.Protocols.Imap.ImapActionCommand.Execute(WorkerStatus status)
at MailClient.Commands.Command.Process(WorkerStatus status)
RunInPlace = False
EnqueuedStackTrace =
at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass40_0.<EnqueueSynchronize>b__0() at MailClient.Protocols.Common.AccountBase.RunIfOnline(Action actionIfOnline, Action actionIfOffline) at MailClient.Protocols.Common.ItemSynchronizer2.Synchronize(Folder folder, SynchronizationPriority priority, Action1 completed) at MailClient.Storage.Application.ItemCollection2.Synchronize(SynchronizationPriority priority, Action`1 completed, Boolean fromUI)
at MailClient.Storage.Application.Folder.Synchronize(SynchronizationPriority priority, Boolean fromUI)
at MailClient.Protocols.Common.FolderSynchronizer.FolderActivated(Folder folder, Boolean goingOnline)
at MailClient.Protocols.Imap.ImapFolderSynchronizer.FolderActivated(Folder folder, Boolean goingOnline)
at MailClient.Protocols.Common.FolderSynchronizer.GoOnlinePost()
at MailClient.Protocols.Imap.ImapFolderSynchronizer.GoOnlinePost()
at MailClient.Protocols.Imap.ImapAccount.GoOnlineInt()
at MailClient.Protocols.Common.AccountBase.ChangeOnlineState(Boolean online, OfflineReason offlineReason)
at MailClient.Protocols.Common.AccountBase.GoOnline()
at MailClient.Protocols.Common.AccountBase.RunIfOnline(Action actionIfOnline, Action actionIfOffline)
at MailClient.Protocols.Imap.ImapAccount.RunIfOnline(Action ifOnline, Action ifOffline)
at MailClient.Protocols.Imap.ImapAccount.<Controller_ProcessResumed>b__75_0()
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
at System.Threading.ThreadPoolWorkQueue.DispatchItemWithAutoreleasePool(Object workItem, Thread currentThread)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Threading.Thread.StartCallback()
GUIStatus_Exception_Reported = True
2:56:20 PM [email protected] IMAP Synchronizing folder ‘/Inbox’
2:56:20 PM [email protected] CardDAV Synchronizing folder list
2:56:20 PM [email protected] CalDAV Synchronizing folder list
2:56:20 PM [email protected] CardDAV Synchronizing items: For folder [email protected]/Contacts
2:56:20 PM [email protected] CalDAV Synchronizing items: For folder [email protected]/Calendar
2:56:21 PM [email protected] CalDAV Synchronizing items: Sync of [email protected]/Calendar finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2:56:21 PM [email protected] CalDAV Synchronizing items: Done
2:56:21 PM [email protected] CalDAV Synchronizing items: For folder [email protected]/Edmund_Lam
2:56:21 PM [email protected] CalDAV Synchronizing items: Sync of [email protected]/Edmund_Lam finished: 0 uploaded, 0 deleted, 0 obsolete, 27 items, 0 downloaded
2:56:21 PM [email protected] CalDAV Synchronizing items: Done
2:56:21 PM [email protected] CalDAV Synchronizing items: For folder [email protected]
2:56:21 PM [email protected] CardDAV Synchronizing items: Sync of [email protected]/Contacts finished: 0 uploaded, 0 deleted, 0 obsolete, 350 items, 0 downloaded
2:56:21 PM [email protected] CardDAV Synchronizing items: Done
2:56:21 PM [email protected] CalDAV Synchronizing items: Sync of [email protected] finished: 0 uploaded, 0 deleted, 0 obsolete, 0 items, 0 downloaded
2:56:21 PM [email protected] CalDAV Synchronizing items: Done
2:56:40 PM [email protected] IMAP Synchronizing folder ‘/Trash’
2:56:43 PM [email protected] IMAP Synchronizing folder ‘/Inbox’
2:56:47 PM [email protected] IMAP Uploading item(s) to folder ‘/Inbox’
2:56:47 PM [email protected] IMAP Synchronizing folder ‘/Inbox’