Please confirm that you are running one of the following versions of Veeam Backup for Microsoft 365 before upgrading to 5.0:
- 3.0 (build 18.104.22.1682)
- 4.0 (build 22.214.171.1245)
- 4a (builds 126.96.36.1993, 188.8.131.520)
- 4b (builds 184.108.40.2066, 220.127.116.119)
- 4c (builds 18.104.22.1689, 22.214.171.1241, 126.96.36.1995)
You can check this under Help and Support > About in the Veeam Backup for Microsoft 365 console. To upgrade from earlier versions, please contact our Customer Support. After upgrading, your build number will change to 188.8.131.523.