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

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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.

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  1. Anonymous
    2023-09-29T22:46:42+00:00

    Microsoft® Outlook® 2021 MSO (Version 2309 Build 16.0.16827.20130) 64-bit, & Windows 11 Home 22H2

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  2. lmacri 2,505 Reputation points
    2023-09-29T16:07:25+00:00

    I do not have the start-up options giving me any selections...

    Hi FeliceWerwin:

    What is your Windows operating system and the name of your Microsoft Office Click-to-Run product? When you launch Outlook, go to File | Office Account, and look beside the About Outlook button does it show that you have received the Version 2309 / Build 16827.20130 update released on 28-Sep-2023? If not, go to File | Office Account | Update Options and choose Update Now to start the installation of the latest update with the bug fix.

    From File | Office Account of my MS Outlook 2019 that is part of my Microsoft Office Home and Business 2019 Click-to-Run suite:

    Image

    Dell Inspiron 5584 * 64-bit Win 10 Pro v22H2 build 19045.3448 * Firefox v118.0.1 * Microsoft Defender v4.18.23080.2006-1.1.23080.2005 * Malwarebytes Premium v4.6.3.282-1.0.2158 * Macrium Reflect Free v8.0.7279 * MS Office Home and Business Version 2309 / Build 16827.20130 Click-to-Run

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  3. Anonymous
    2023-09-29T15:43:41+00:00

    I do not have the start-up options giving me any selections:

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  4. lmacri 2,505 Reputation points
    2023-09-29T04:26:17+00:00

    The release notes for to Version 2309 / Build 16827.20130 have now been posted at https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2309-september-28, and the Resolved Issues section for Outlook states in part that "We fixed an issue where the setting to control how Outlook opens previous items at start-up was missing from the Options window".

    After updating to Version 2309 / Build 16827.20130 I changed the setting at File | Options | General | Start Up Options | When Outlook Opens to Never reopen previous items ...

    Image

    ... and I can confirm that the Version 2309 / Build 16827.20130 update automatically created the missing ReopenWindowsOption registry key at HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Preferences. My value is currently set to 1 (where 0 = Ask me if I want to reopen previous items, 1 = Never reopen previous items, 2 = Always reopen previous items), which matches the setting I chose in my Start Up options.

    Image

    Please note that I did not try any of the temporary workarounds suggested in this thread like rolling back my MS Office to Version 2305, manually creating the ReopenWindowsOption registry key (value type = REG_DWORD, value = 1) in my registry, disabling the “Store my Outlook Settings in the Cloud” checkbox at File | Options | General | Cloud Storage Options (which isn’t present in my MS Office 2019 settings) or adding the /restore switch to the Target field of my Outlook desktop shortcut.

    Dell Inspiron 5584 * 64-bit Win 10 Pro v22H2 build 19045.3448 * Firefox v118.0.1 * Microsoft Defender v4.18.23080.2006-1.1.23080.2005 * Malwarebytes Premium v4.6.3.282-1.0.2158 * Macrium Reflect Free v8.0.7279 * MS Office Home and Business Version 2309 / Build 16827.20130 Click-to-Run

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