Web Browsers Repeatedly Hijack PDF File Extension
We have Windows 10 Enterprise 64-bit on all user PCs, with Adobe Acrobat DC (Reader), Chrome and EdgeChromium installed too. Many users experience Chrome or Edge hijacking the PDF file extention so that PDF files accessed from, for example, Explorer or Outlook open in one of the browsers instead of in Acrobat DC.
If we reset the PDF file assocation back to Actobat DC (via Explorer as well as via Windows Defaults), it works for a while (usually a week or more) but then the file assoication switches back to a browser. I have tried enabling the Adobe Acrobat browser extension but this too hasn't helped.
I have spent days researching & trying various fixes, but none work permanently.
What am I missing? What is messing with the file associations and causing them to change?
