May 20 2022 11:01 AM - edited May 20 2022 11:12 AM
Windows 10 21H2 (OS Build 19044.1706)
Office 365 2204 (Build 15128.20178)
I'm unable to launch Outlook 365 offline. I get the error: "Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The attempt to log on to Microsoft Exchange has failed." Once Outlook has started and successfully connected, I can then go offline, but if I am not online during launch I can never get in.
I've tried:
- starting in safe mode
- sfc /scannow
- dism /online /cleanup-image /checkhealth
- creating a new profile
- creating a new C:\Users\...\appdata\local\Microsoft\Outlook folder
- toggling cached exchange mode on and off
- toggling "turn on shared calendar improvements"
- disabling "download shared folders" in advanced account settings
- disabling "favorites" in the folder pane
- creating a registry REG_DWORD key HKCU\Software\Microsoft\Office\16.0\Outlook\AutoDiscover\ExcludeScpLookup with Value 1
None of these change the behavior.
Any ideas?
May 20 2022 12:06 PM
SolutionJun 03 2022 08:58 AM
Jun 08 2022 11:05 PM
Aug 18 2022 05:44 AM
Mar 14 2024 05:36 AM
May 20 2022 12:06 PM
Solution