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Microsoft Outlook is crashing worldwide with 0xc0000005 errors, how to fix

7/15/2020

2 Comments

 
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Microsoft Outlook is immediately crashing worldwide when users start the application, with 0xc0000005 errors displayed in the Windows Event Viewer.
These crashes started occurring over the last hour, and reports are flooding in from users all over the world.

You can fix this two ways - temporarily for right now :(

A.) Roll back to the June 24, 2020, release and fix the Microsoft Outlook crashes, please follow these steps:
  1. Open a command prompt by clicking on the Start Menu and typing CMD. When the 'Command Prompt' result appears, click on it.
  2. In the command prompt type cd "\Program Files\Common Files\microsoft shared\ClickToRun" and press enter.
  3. You will now be in the ClickToRun folder. Type officec2rclient.exe /update user updatetoversion=16.0.12827.20470 and press enter.
  4. When the updates are finished installing, you will be shown a screen stating 'Updates were installed.' You can press the Close button on this screen.
  5. Microsoft Outlook will now be rolled back to the previous version, and you should be able to start Microsoft Outlook again.
  6. You can now close the Command Prompt by clicking on the X button.

B.) If you do not want to roll back to a previous version of Microsoft Office, you can launch Microsoft Outlook in Safe Mode to fix the crashes.  It should be noted that when starting Outlook in Safe Mode, all add-ins will be disabled, including security add-ins.To start Outlook in Safe Mode, please follow these steps:
  1. Press and hold the Ctrl key on your keyboard and then launch Microsoft Outlook. Outlook will proceed to start and then ask if you are sure you wish to start in safe mode.
  2. You should now press the Yes button and Outlook will start in Safe Mode with add-ins disabled.
  3. Once Outlook starts, you can confirm you are in Safe Mode, as the title of the Outlook window will state "Microsoft Outlook (Safe Mode)"
  4. When done using Outlook, you can simply close the program.
  5. It should be noted that you need to repeat this procedure every time you want to start Outlook in Safe Mode.
    If these methods do not work, please leave a comment.

    Also make sure to pause updates for 7 days so that the problem does not come back and hopefully microsoft will have fixed the issue by then.


2 Comments
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