SmarterMail Enterprise
Build 7793 (May 3, 2021)
This has come up on MailOps... I noticed since the May 10th updates for Windows, MAPI is now broken on Outlook 2016. For Exchange it seems like you can downgrade Outlook:
"C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.13901.20462
I tried on SmarterTools and doesn't seem to work. From the SmarterMail logs everything seems okay.
[2021.05.11] 23:54:28.535 [{50A93887-2588-4C56-BC89-8FA0B0B81D78}:43] Started Method: [RopOpenFolder] Caller: [eric@truenet.com] Owner: [eric@truenet.com]
[2021.05.11] 23:54:28.535 [{50A93887-2588-4C56-BC89-8FA0B0B81D78}:43] Finished Method: [RopOpenFolder] Caller: [eric@truenet.com] Owner: [eric@truenet.com]
[2021.05.11] 23:54:28.550 [{50A93887-2588-4C56-BC89-8FA0B0B81D78}:44] Started Method: [RopFastTransferSourceGetBuffer] Caller: [eric@truenet.com] Owner: [eric@truenet.com]
[2021.05.11] 23:54:28.550 [{50A93887-2588-4C56-BC89-8FA0B0B81D78}:44] Caller: [eric@truenet.com] Owner: [eric@truenet.com] Folder Id: [70038] Sync Type: Contents Sync Flag: Fai Sync Flag: Normal Sync Flag: Downloading Buffer Size: 47806 Maximum Buffer Size: 31680
[2021.05.11] 23:54:28.550 [{50A93887-2588-4C56-BC89-8FA0B0B81D78}:44] Finished Method: [RopFastTransferSourceGetBuffer] Caller: [eric@truenet.com] Owner:
[eric@truenet.com]
Outlook says it can't log in: Cannot expand the folder. The set of folders cannot be opened. The attempt to log on to the Microsoft Exchange has failed.
*Edit: not sure, but it seems to be working this morning. Definitely a strange issue, so may be related.