Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello,Wilson Ma
Welcome to the Microsoft community!
I have realized that your Office application stops working and with the error code 29.
We recently received another burning question about a triangular exclamation mark in the upper right corner of the username. Also on the File > account page, you need to fix your account, by clicking on Activate, you will get an error with error code 29.
If the error problem is like this?
If so, as mentioned above, your problem is sometimes related to permissions. Here's another permission-related solution you can try:
- Press Windows + R to open the run box, copy and paste the following path, back up all folders in this path, and then delete them.
%localappdata%/Microsoft/OneAuth
%localappdata%/Microsoft/IdentityCache
- Press Windows + R, enter regedit, click OK, open the registry, find the next registry subkey, right-click Identity, and delete it.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\Identity
Disclaimer: Modifying registry or workgroup subkeys is generally intended for power users, administrators, and IT professionals. It can help fix some issues, however, serious problems can occur if you modify the registry incorrectly. So, make sure to follow these steps carefully. For more protection, back up the registry before modifying it. You can then restore the registry if a problem occurs. For more information about how to back up and restore the registry, click How to back up and restore the registry in Windows - Microsoft Supportto read the article.
- We've recently received feedback from users that reinstalling Microsoft 365 using an offline installer may resolve the issue.
Some users have already reported that reinstalling with an offline installer has solved the problem.
I suggest you try uninstalling the software first and then try to install it using the offline installer.
I'll send you the Microsoft 365 installer.
- Other users have mentioned that reverting Office versions can fix the problem
There is also a way to fix the problem by going back to an older version of Word.
You can confirm your current version of Word by clicking File > Account > About Word
Search for "CMD" in the search box in the bottom left corner and run the command prompt as administrator.
cd %programfiles% \Common Files\microsoft shared\ClickToRun
Press Enter when you are done typing and type on the next line
For example: April 9, 2024, version 2403 (Build 17425.20176)
Officec2rclient.exe /update user updatetoversion=16.0.17425.20176
If you're Microsoft 365, you can check this connection
Update history for Microsoft 365 Apps (listed by date) - Office release notes | Microsoft Learn
Feel free to post back if you need further assistance.
Thank you for your understanding and patience and I look forward to hearing from you.
Ryan - MSFT | Microsoft Community Support Specialist