Note SQL server\instance, vRanger DB is attached to, under Tool menu | Options | Database.
Uninstall Ranger 7.6.0. When prompted, DO NOT include DB. We need to preserve it.
Either use SQL Management Studio (if available) or sqlcmd. Basically you need to change one value.
command in Studio: USE vRangerPro UPDATE ConfigurationOption SET Value = '7.5.0.0' WHERE Name = 'LastUpgradedVersion'
for sqlcmd and local SQL instance called vRangerPro sqlcmd -S .\vRangerPro -d vRangerPro -Q "UPDATE ConfigurationOption SET Value = '7.5.0.0' WHERE Name = 'LastUpgradedVersion'" command is partially case sensitive.
Run 7.5.x installation and point it to existing DB.
追加情報
Since vRanger 7.6.0 is the first version to support VC/ESX6.5, roll back to previous vRanger version will cause any ESXi 6.5 backups and replications to fail.