Keep Getting "Outlook closed while you had items open. Reopen items from last session?" Even Though It's Not True

Anonymous
2023-07-05T13:34:20+00:00

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:

Outlook | Windows | Classic Outlook for Windows | For business

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.

0 comments
Answer accepted by question author
Anonymous
2023-07-07T17:46:51+00:00

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.

Was this answer helpful?

40+ people found this answer helpful.
0 comments

178 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. lmacri 2,505 Reputation points
    2023-09-22T11:33:00+00:00

    like Indicated before my 2016 seems to have fixed itself or may Microsoft remotely did, I no longer have this error. Must have been a Microsoft bug. Mine only lasted two days. It was a very annoying bug. I 'm running version 2309, build 16827.20056

    Ted William Hassing:

    The latest version of Microsoft 365 and perpetual editions of MS Office 2016 / 2019 / 2021 Click-to-Run for the "stable" Current Channel release is Version 2308 / Build 16731.20234 (rel. 12-Sep-2023). For example, see the update history <here> for retails versions of Office 2016 and Office 2019 C2R (Current Channel).

    If your MS Office 2016 C2R software has already updated to Version 2309 / Build 16827.20056 then that suggests that you have enrolled in Microsoft's Office Insiders program for early beta testers and are receiving Current Channel (Preview) builds that have bug fixes that most users posting in this thread don't have yet. The update history <here> for the Current Channel (Preview) builds shows that Version 2309 / Build 16827.20056 was released to Insiders on 11-Sep-2023.

    Dell Inspiron 15 5584 * 64-bit Win 10 Pro v22H2 build 19045.3448 * Firefox v117.0.1 * Microsoft Defender v4.18.23080.2006-1.1.23080.2005 * Malwarebytes Premium v4.6.2.281-1.0.2131 * Macrium Reflect Free v8.0.7279 * MS Office Home and Business 2019 v2308 Build 16731.20234

    Was this answer helpful?

    0 comments
  2. Anonymous
    2023-09-22T10:18:52+00:00

    like Indicated before my 2016 seems to have fixed itself or may Microsoft remotely did, I no longer have this error. Must have been a Microsoft bug. Mine

    only lasted two days. It was a very annoying bug. I 'm running version 2309, build 16827.20056

    Was this answer helpful?

    0 comments
  3. Anonymous
    2023-09-22T09:43:17+00:00

    I fixed it in my 2016 Outlook! :) No more "outlook closed while you had items open" error after months of frustration!!!

    Simply click on on that "try the new outlook" in the top right corner and then cancel the download /update!

    Was this answer helpful?

    0 comments
  4. Anonymous
    2023-09-21T10:36:17+00:00

    Thanks for the recommendation, no longer get this error anymore. It eventually fixed itself up. Must have been a Microsoft bug. Thanks again! Cheers!

    Was this answer helpful?

    0 comments