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

Thanks for all the helpful information and advice. It's greatly appreciated. 👍

Your welcome and I appreciate the Thank You as many I help never let me know that my advice helped them.

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Windows 10 Home Users Companion

Upload the PDF to your smart phone so you can refer to the instructions while performing that function on the PC.

Thanks for all the helpful information and advice. It's greatly appreciated. 👍

I'm glad you got it to work and I must have missed that post that you got it to work.

"I forgot the beginning quote and it was not recognized. I then put in the quote, pressed Enter and the "update", or in this case "reversion", downloaded and installed."

For future reference you don't have to use quotes in commands any more. You can still use them, but they must be matched with closing quotes. That article is older and when it was written quotes were needed. Forget about quotes and avoid hassles like non matching quotes.

"To revert back to any other build, you can find the build numbers here:

Version numbers of update branches for Office 365 clients."

Yes, but one can get confused about which version to use. It is best to look at the Update history in your Outlook application which shows the exact build number for your Outlook. Outlook Update History = File > Office Account, click dropdown for Update Options and select View Updates. This goes directly to the Microsoft Updates page for this specific Outlook application. This differs slightly from those instructions that you posted and its the way I chose to perform this action.

BTW: Microsoft released a second version of 2306 on July 11, 2023, but appears to affect only Excel and Word app. Hopefully Microsoft will fix this bug soon.

Hello and good morning/afternoon/evening (whichever applies)

I apologize for any misunderstanding (it's a byproduct of continuous threads).

Below is a copy/paste of my post from July 15. It worked for me flawlessly without any issues. I reverted back to the prior build in minutes.

Soon after I posted, Pete read my post and said he would try what I wrote, Later that day he replied saying that it did not work for him. I am using Outlook 2019 C2R and he's using Outlook 2021 C2R and he thought that might be the reason it didn't work for him.

On July 16 you posted a more thorough explanation of the procedure. There were also a few additional posts by others. Pete said he would try it again.

On July 17 (today) Pete said that your instructions worked. I reviewed what you wrote and what I wrote and couldn't find any difference in the command line so I was asking Pete if he made an error entering the command or if I've been overlooking an error in what I wrote.

I want to correct my post if there is an error because I don't want bad information posted since others will likely try it.

😊😊😊😊😊

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POST FROM JULY 15 2023

This is how to revert back to Build 2305:

First, you need to disable Office updates. If you don’t disable updates, the problem update will reinstall itself. You can disable updates from the File menu in any Office application.

In Outlook go to File, Office Account, Update Options and click onDisable Updates.

Open the command prompt as administrator. If you are using Outlook 2016, 2019, or 365, copy the following line, then right click in the command prompt window to paste it. "C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.16501.20210

INCLUDE THE "QUOTES" AS SHOWN ABOVE. If you look at the screenshot below you'll see the first time I entered the command I forgot the beginning quote and it was not recognized. I then put in the quote, pressed Enter and the "update", or in this case "reversion", downloaded and installed.

To revert back to any other build, you can find the build numbers here:

Version numbers of update branches for Office 365 clients.

The format to revert back to a prior build is:

"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.xxxxx.yyyyy (where you change xxxxx.yyyyy to the build you want)

I just did it and it works without any issues. I hope this helps others.