Office files are corrupted after upgrading to Windows 10, how to fix?

After upgrading from Windows 7/8 to Windows 10, many users encounter the following error: their Office 2013 text files cannot be opened and display the following errors:

1. On Microsoft Word: 'Word experienced an error trying to open the file'
2. On Microsoft Excel: 'The file is corrupt and không thể được mở'
3. And with PowerPoint, 'The application was unable to start correctly " or ' PowerPoint found a problem with " or 'Sorry, PowerPoint can't read "

Causes of errors:

In fact, this error occurs when Office is trying to open a text file in Protected Mode , or when the program comes with Outlook attachments, or files that do not have a clear origin.

Solution:

Please run this file, or try one of the two ways below:

Method 1:

Open Command under Administrator, then type (or Paste) the following command into:

icacls "% programfiles% Microsoft Office 15" / grant * S-1-15-2-1: (OI) (CI) RX

Press Enter to execute the command, and then reopen the text file, Office will no longer have the same error.

Method 2:

If the above does not solve the problem, try the following: open Control Panel> Programs> Uninstall a program or Programs and Features, select the corresponding Office application> Change> Online Repair and click on the Repair section.

Hopefully, the steps above can help you fix errors that cannot open Office text files when upgrading to Windows 10. Wish you success!