Can you try below steps and check if it helps:

> Take a snapshot of the AVM machine.

> Take a full backup of App Volumes SQL database if it is an existing upgrade.

> Uninstall app volumes manager software from control panel > programs and features.

> Delete directory C:\program files x86\Cloudvolumes .

> Delete below reg hive:

HKLM\SOFTWARE\WOW6432Node\CloudVolumes

> Reboot

> Reinstall app volumes manager. Point to the new DB if it is a fresh installation and use SQL authentication for database login.

NOTE:

For windows authentication login, computer account must be registered in Database > Login.

Doc covers this: Install App Volumes Manager