please find below a feedback of our upgrade from Veeam One 9.0.0.2062 to Veeam One 9.5.
Issue 1 :
Used procedure : https://www.veeam.com/pdf/release_notes ... tes_en.pdf ...
In our context the Veeam service account is not sysadmin on the SQL Instance, we followed the upper procedure without changing anything on SQL privileges and we received the below error during the upgrade process :
"Win32 exception occured while executing SQL script ... Error details: The SELECT permission was denied on the object 'sysjobs', databate 'msdb', schema 'dbo'."
After this error the installation could not restart, the installer displayed : "Setup has detected inconsistent configuration: some Veeam ONE components are missing; Remove the installed Veeam ONE components manually and start the setup wizard again."
To solve this issue I did the followings :
1. Restore the VM that is hosting the Veeam One application (through Veeam Backup & Replication of course

2. Attribute sysadmin privilege on the Veeam One SQL instance
3. Re-start the upgrade
4. When upgrade is done, remove the sysadmin privilege on the Veeam One SQL instance and restart the Veeam One application server.
Would be nice to add in the upgrade procedure this sysadmin trick, I suppose that we will have the same behaviour for Veeam Backup & Replication upgrade.
Issue 2 :
We were already using https connections, the upgrade force the web site to use the local machine https certificate.
To solve this you should re attribute the certiicate through IIS.
Regards,
James