Please confirm you are running version 126.96.36.1990, 188.8.131.521, 184.108.40.2062 or 220.127.116.113 prior to installing this update. You can check this under Help | About in Veeam Backup & Replication console. After upgrading, your build will be version 18.104.22.1688.
If you use Veeam ONE to monitor Veeam Cloud Connect, make sure you install this
update. You will need to install the update for Veeam ONE first, then install update 22.214.171.1248 for Veeam Backup & Replication.