Error: Adobe Acrobat reader cannot access the network, error when opening from some SharePoint sites
We have a SharePoint 2019 on-prem farm that we are using as a document management platform. When we open PDF's from some of the sites and check them out to make changes and try to save those changes back, we are getting an "Adobe Acrobat Reader Cannot access the network. Please verify your computer's network connection and try again." and the PDF won't save.
The strange thing is some of the sites in the farm will work, but others wont and when looking at the setup of them they are the same, and we can’t see any differences. I have tried with an account that is a site collection admin but still get the same issue, so that rules out it being a permission issue.
Im not to sure what to check now, but was wondering if anyone else has had the same or know of anyway to turn debug logs on with acrobat to try find out why?
Thanks in advance!

