This article describes the Microsoft Outlook Error code 0x800CCC91 in windows 10/11. It is Microsoft Outlook Error. This outlook Error 0x800CCC91 restricts your ability to send/receive emails on your Outlook email address successfully. This error is quite common and is faced by many Microsoft Outlook users.
Causes of Outlook Error Code 0x800CCC91 in windows 10
Incorrect Outlook Configuration setting
PST files get corrupt
PST file crosses its fixed file size limit
Failure of POP3 and Protocol STMP in the database server connection
Improper synchronization between Outlook and the server
Usage of invalid password or username
Virus Infection
How to Fix the Troubleshoot Outlook Error code 0x800CCC91:
To fix the troubleshoot Outlook error 0x800CCC91is following three methods and explain them briefly.
Method 1: Fix System Integrity Issues
- open Run Window and enter the Outlook/safe then click Ok then start Outlook in Safe Mode.
- After that Open the Run Window and enter the cmd then click OK.
- When the Command Prompt window opens, type SFC /scan now command and hit Enter.
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- Now the system should run a scan for any system integrity issues. In case it finds any, it will get everything fixed automatically.
if this method did not help to remove the 0x800CCC91 Error Code on Microsoft Outlook, then you should try the following methods.
In Conclusion: