I'm getting EWS errors most of the time

Hi there, new to the eM Client,

I’m getting a couple of errors as below and need some help with this.

8:03:02 pm wayne@… [Exchange Web Services] MailClient.Storage.Application.OperationException: Synchronizing folder ‘wayne@…/Inbox’ failed due to the following error: Response status code does not indicate success: InternalServerError (Internal Server Error).
—> Microsoft.Exchange.WebServices.Data.EwsHttpWebException: Response status code does not indicate success: InternalServerError (Internal Server Error).
at MailClient.Protocols.Exchange.ExchangeGenericCommand.Execute(WorkerStatus status)
— End of inner exception stack trace —
at MailClient.Protocols.Exchange.ExchangeGenericCommand.Execute(WorkerStatus status)
at MailClient.Commands.Command.Process(WorkerStatus status)
— End of stack trace from previous location where exception was thrown —
at MailClient.Protocols.Exchange.ExchangeAccount.SynchronizeIntAsync(Boolean forced)
at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass6_0.<b__0>d.MoveNext()
EnqueuedStackTrace =
at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass37_1.<EnqueueSynchronize>g__RunSynchronize|2() at MailClient.Protocols.Common.ItemSynchronizer2.<>c__DisplayClass37_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.MailClient.Storage.Synchronization.IItemSynchronizer<TStorageItem>.Synchronize(Folder folder, SynchronizationPriority priority, Action1 completed)
at MailClient.Storage.Application.ItemCollection2.Synchronize(SynchronizationPriority priority, Action1 completed)
at MailClient.Storage.Application.Folder.Synchronize(SynchronizationPriority priority)
at MailClient.Storage.Application.Folder.Synchronize(Boolean forced)
at MailClient.Protocols.Common.FolderSynchronizer.FolderActivated(Folder folder, Boolean goingOnline)
at MailClient.Protocols.Common.FolderSynchronizer.GoOnlinePost()
at MailClient.Protocols.Exchange.ExchangeAccount.GoOnlineInt()
at MailClient.Protocols.Common.AccountBase.ChangeOnlineState(Boolean online, OfflineReason offlineReason)
at MailClient.Protocols.Common.AccountBase.GoOnline()
at MailClient.Accounts.AccountList.<>c__DisplayClass19_1.b__1()
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.<>c.<.cctor>b__274_0(Object obj)
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.Tasks.Task.ExecuteEntryUnsafe(Thread threadPoolThread)
at System.Threading.Tasks.Task.ExecuteFromThreadPool(Thread threadPoolThread)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

8:07:07 pm wayne@… [Exchange Web Services] System.Threading.Tasks.TaskCanceledException: A task was canceled.
at MailClient.Storage.Synchronization.FolderSynchronizerExtensions.SynchronizeSubfoldersAsync(IFolderSynchronizer synchronizer, Folder folder, SynchronizationPriority priority, CancellationToken cancellationToken)
at MailClient.Protocols.Exchange.ExchangeAccount.SynchronizeIntAsync(Boolean forced)
at MailClient.Protocols.Common.SynchronizableMailAccount.<>c__DisplayClass6_0.<b__0>d.MoveNext()

What version of eM Client are you using? There were some Exchange issues after a recent Exchange Server upgrade, but I believe they have been fixed either by Microsoft or by a recent version of eM Client. Check you are using the latest version from the Release History.

As the first error says Internal Server Error, I would also contact the sys admin to find out if there is an issue with the server.

If there is no problem with the server, and this is your work server, I would open a support ticket directly with eM Client.