HP LaserJet MFP M426fdn Scan-To-Network Suddenly Stopped Working

[gissj]

This printer is mostly used for scanning to network files. The config was working without issue for quite a while but recently users complained it would no longer scan to their scans folders. The users have rwxm permissions on their scans folder and their account is used for authentication. I also attempted giving the users full control on their scans folder but that did not work either. I have rebuilt the scan to network settings for 2 users and I can not get it to work, when testing the following error is displayed "The test was unsuccessful. Try again." The only way I can get the scan to network to work is to use a domain admin account for authentication. This is not an option. I also applied the most recent firmware update from 7/31/2019 in an attempt to fix this with no successful results.

[SHThompson]

Are you using the FQDN in the settings?

[gissj]

Thank you for your reply/suggestion. If I switch to the FQDN\username I get the following error "The network folder path is invalid. Ensure the specified directory exists." I know the specified directory exists as I copied and pasted the path from Explorer into the config.