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This just started happening. Whenever I open Outlook, I get the message "Outlook closed while you had items open. Reopen items from last session?" even though this is not true -- I did not have items open when I closed Outlook. Using Windows 11. Screenshot of what version of Outlook I have:
Using classic Outlook for Windows in business environments
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I'm on build 2306. Is this the reg key in question?
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Preferences
DWORD: ReopenWindowsOption
Value: 1
Yes.
Some users that updated to 2306 have reported that the key was not already in the Registry and had to add it and the value.
Microsoft appears to have resolved this issue at some time in the last week or so. In my current build of Outlook Professional Plus 2021 - Version 2309 (Build 16827.20130 Click-to-Run) - the three options of how to handle previously open items have been restored to the "Start-up Options" section of the "General" Outlook Options dialogue box.
The value of the "ReopenWindowsOption" DWORD now appears in the Registry and varies depending on the option selected - 0 for "Ask", 1 for "Always Open" and 2 for "Never Open". A missing instance of this DWORD has the same effect as the value "0". Changing the selection then returning it to "Ask" will leave an explicit registry entry with value "0".
O.K. Thanks!