I finally got the upgrade to work! I had run an upgrade a month earlier and it was still sitting in the backup folder. It seems that the AdGuard upgrade process would not overwrite the files in the backup folder, /etc/AdGuardHome/agh-backup. I was also running out of space to even add another .ovpn connection. I sshed in and manually deleted the AdGuardHome executable in the backup folder, and the upgrade worked just fine (I was also able to add another .ovpn connection) . The upgrade process also copies the old files to the backup folder, so once I’m satisfied the new version of AdGuardHome is working fine, I’ll delete the executable in the backup folder.

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