To fix the "This file is corrupted and cannot be opened" error message, set component security settings back to the default settings.
Do as shown below :
- Start Run and enter dcomcnfg & press enter
- Expand Component Services → Navigate to Computers → Right Click My Computer and select Properties
Open the Default Properties tab, and then set the following values:
Default Authentication Level: Connect
Default Impersonation Level: Identify
Click OK & try saving the document again