Note that in my case, I finally realized that it stopped working because my firewall's wifi was upgraded from 2.4 GHz to 5GHz (had the same problem with an older printer). If I run it on the 2.4 band it worked fine after I just reinstalled the scansnap manager software from the above link. I did not go through the firmware update process as I ran into the same issue as you did.
I need Scansnap Manager Evernote Edition software, and it's not listed for download. It's required for firmware update of Evernote Scansnap Scanner.
in General Technical Issues
Posted
Here's the link to the Evernote ScanSnap Software
https://www.linksdriver.com/2019/12/fujitsu-scansnap-evernote-software.html
Note that in my case, I finally realized that it stopped working because my firewall's wifi was upgraded from 2.4 GHz to 5GHz (had the same problem with an older printer). If I run it on the 2.4 band it worked fine after I just reinstalled the scansnap manager software from the above link. I did not go through the firmware update process as I ran into the same issue as you did.
This should be a lot easier to find out about....