I'm not sure how long this has been happening but I've just noticed it in the past few weeks. We have a multitude of forms and reports stored on our local server that we provide links to from our Intranet. When we open the links, which are formatted as "file://servername/sharename/filename", we notice a couple of things.
First, if the user makes changes and wants to save it over the original file, they have to select Save As from the menu. Otherwise, if they just click Save (as most are used to doing) it saves the file to a temp folder such as "C:\users\Users\username\AppData\Local\Temp\MicrosoftEdgeDownloads". This has caused a nightmare for us since multiple users access the same files and make their own updates to them. Not realizing that they weren't saving to the original location, they assumed their changes were visible to everyone else. This has caused a lot of report inaccuracies lately.
Secondly, some of our files have links within them to other local Office documents. Those originally pointed to a path like this: "file:///\\servername/sharename/filename". Now, however, once we open the first file, the internal links are changed to something like this: "file:///C:\users\username\appdata\local\temp\MicrosoftEdgeDownloads\randomfoldername\filename". If the user saves the file back over the original, all of these internal links get messed up.
We used to access our Intranet with IE and things worked beautifully. I prefer to use Edge, but it has ruined how we do things with our local files. Is there any way to keep our links and reduce the confusion and errors that are happening now?