Upgrade Agent fails with error "Windows upgrade must be performed by an administrator" if the Administrators group name is not in English, or is given administrator rights via Group Policy - Known Error

Upgrade Agent fails with error "Windows upgrade must be performed by an administrator" if the Administrators group name is not in English, or is given administrator rights via Group Policy Description ACC Self-Upgrade fails when verifying that the service user is an administrator, and causes the error: Agent upgrade Failed. Check output: Windows upgrade must be performed by an administrator

if 1/ the group name "Administrators" is not in English. e.g. "Administratoren" on a German host is not matched,

2/ the service account is added to local admin account group via Group Policy

3/ the service account is a member of another AD security group nested within the local administrators group

These are all side-effects of the real problem, which is that the check is only for group membership, and not the actual required permissions the upgrade is going to need. Such as service stop/start, run as service, etc.

Steps to Reproduce

test 1: On a German language pack Windows computer, install ACC Set the service user to a local user that is a member of the local administrators group, which will be named "Administratoren " Attempt a self-upgrade

test 2: On an English language Windows computer, install ACC Set the service user to a local user that is given administrator rights via Group Policy, or is a member of a group that is a child of the administrators group Attempt a self-upgrade

Workaround This problem is currently under review and targeted to be fixed in a future release. Subscribe to this Known Error article to receive notifications when more information will be available.