How to Fix the PowerPoint Chooser Failed Error

Description: Receiving a PowerPoint Processing Failed: Tags (Unknown member): Invalid request. Presentation cannot be modified. 

The Problem: Microsoft Office Version 16.0.20131.20090. 

The Fix: Update to Microsoft Office Version.

Steps: 

1. Force an update from the Command Prompt as admin
   1. Open the command prompt as admin.
   2. Type in cd "%ProgramFiles%\Common Files\Microsoft Shared\ClickToRun"
      or
      cd "%ProgramFiles(x86)%\Common Files\Microsoft Shared\ClickToRun"
   3. Press Enter
   4. Type in OfficeC2RClient.exe /update user updatetoversion=16.0.20026.20182
   5. Press Enter. 
   6. Let the update run. 

If you're still getting an error after completing these steps, check out our guide - PowerPoint Processing failed: Presentation (unknown member) : An error occurred while PowerPoint was saving the file.