Cannot start Outlook 365 in Windows 10 even in safe mode and get no error messages. It just dies.

Get msg that says "Outlook couldn't start last time. Safe mode could help you troubleshoot the problem, but some features might not be available in this mode.

Do you want to start in Safe Mode?

I click Yes and then I get to choose a profile, but the correct profile shows up on the options menu under properties.  So I just click OK and then the system starts Outlook for a moment and then the task manager shows it there for an instant and then not there and no other messages.

VERY FRUSTRATING, just like these Microsoft community areas that ask the same questions but get no answers that are useful.

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Welcome Tom,

I'm an independent advisor, a fellow user and I'm here to help you. Follow these steps:

1) Open Control Panel > Programs and Features
2) Click Microsoft Office in the list of installed applications
3) At the top, click "Change" > On the resulting dialog, click "Repair"
4) Choose the online repair to make sure everything gets fixed (the faster Quick Repair option is also available, but it only detects and then replaces corrupted files)

Regards.

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I am having the same issue with office 2016/365/2019 effecting like 30-40 pc (so far the tickets are rolling in)

looks like office version 16.0.13001.20266 is the culprit

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Tried the repair. Same issue tries to open and closes immed. Same in Safe mode

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I have the same problem as of today, after applying Windows Update yesterday.  But my Outlook version is also very new:

16.0.13029.20126

It's getting an access violation within the Outlook module itself, so that explains why "safe mode" doesn't help.

Scot

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I have the same problem after an overnight Windows update.  I tried uninstalling the most recent updates -- no effect.  I also tried a full repair of Office 365 -- no effect.  This supports it being a bug in the most recent version of Outlook.   My Office 365 installation is 16.0.13001.20384, dated today.

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Microsoft is aware of this quickly-escalating issue, and a high severity incident report has been raised.  Many Microsoft developers are engaged and giving this high priority attention now.

Scot

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@Roy

The Outlook Team is investigating.  We are not sure the root cause yet.  Since you appear to be on Monthly Channel can you try reverting to the prior fork build.

Open a Command Prompt, copy any paste each command below and press Enter after each.  This will revert to the prior fork.  

cd %programfiles%\Common Files\Microsoft Shared\ClickToRun 

officec2rclient.exe /update user updatetoversion=16.0.12827.20470

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Having same issue. Did all the steps and nothing is working.

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I'm having the exact same issues. 

I've done all the steps in the following article:

https://support.microsoft.com/en-us/office/outlook-crashes-or-stops-responding-when-used-with-office-365-bd61bbce-36a5-44d8-a521-9440e5418337

I also tried uninstalling and reinstalling Office 365.

Outlook still crashes immediately upon opening on both of my computers. It won't even launch in Safe Mode.

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Same issue, but not happening company-wide. Seems to only be affecting those who shut down Outlook at the end of the day yesterday.

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Last updated April 13, 2021 Views 2,444 Applies to: