Office documents may error when opened after a Windows 10 upgrade

If you have upgraded from Windows 7 to Windows 10, you may find that some of your Office 2013 documents result in errors when you try to open them in protected view using a Click-to-Run install of Office. Protected View can occur when opening files from locations that may pose a threat such as Outlook or the internet.


  • Excel: "This file is corrupt and cannot be opened"
  • Word: "Word experienced an error trying to open the file"
  • PowerPoint: "Sorry, PowerPoint can't read <file name>"

For more on Protected View, refer to


This issue is being investigated. The KB article below includes steps to resolve the issue:

Error opening Office documents after upgrading to Windows 10


Important Notes:

You may have seen forum posts or third-party content that recommend disabling or bypassing Protected View to prevent this issue. We strongly discourage this step as a resolution.

This issue has not occurred with MSI Office installs or with upgrades from Windows 8.1.

Additionally, if your files are blocked but you are getting a Windows Security type of message, check out this blog as a possibility:

Blocked Access to files with Windows 10