MFCMAPI Hangs on Folder Clean up

[Yuriy Samorodov (YuriySamorodov)]

When trying to clean up a fairly large folder (1.85GB, 25783 messages) MFCMAPI hangs, then throws an error:

Warning: 
Code: MAPI_W_PARTIAL_COMPLETION == 0x00040680 
Function lpMAPIFolderToEmpty->EmptyFolder( lpProgress ? reinterpret_cast<ULONG_PTR>(m_hWnd) : NULL, lpProgress, ulFlags) 
File D:\a\1\s\UI\Dialogs\HierarchyTable\MsgStoreDlg.cpp 
Line 719

Please kindly advise.

[Kedakai]

Hi everyone,

i got the exact same problem deleting a large Folder > 100k Items over 100GB.
Anyone's got a fix for that?

Kind Regards

[glebanya-git]

Yuriy Samorodov (@YuriySamorodov) Did you solve the issue? Having the same exact problem.

[Yuriy Samorodov (YuriySamorodov)]

glebanya-git , nope. =(

[Kedakai]

glebanya-git , i wasn't able to fix it with anything.
Ended up using this absolutely horrible way to delete the Mails from "Recoverable Items" in my case.

https://learn.microsoft.com/en-us/exchange/security-and-compliance/recoverable-items-folder/clean-up-deleted-items
Maybe it helps you figuring out an alternative

[Snoopy5000]

Go to your EAC Exchange admin center --> Open users mailbox settings --> Click Mailbox Tab --> Manage Mailbox Policies -->Set Retention policy to [No Policy].

Then open a second powershell. different from the one you are running the Get-MailboxFolderStatistics command from.
#Connects you to exchange online (You must be a global admin) Copy and paste below:
Connect-ExchangeOnline

#Loop Folder Assistant Until Data is cleared. Copy and paste below and let it run side-by-side mfcmapi:
while($true)
{
Start-ManagedFolderAssistant -Identity username -holdcleanup
write-host "waiting"; start-sleep -seconds 30;
}

Be sure to connect Outlook to the account you want to clean and turn off cache mode, then close and reopen outlook so it takes effect. Close Outlook.

After doing the above, the error in this topic went away, and I could see the mailbox reduce size.

[old7ada]

Hi Tarnold000,

how to stop the loop?

thanks

[Snoopy5000]

Hi Tarnold000,

how to stop the loop?

thanks

Closing the powershell will stop the loop.