23h2 solution upgrade

Performing the 23h2 solution upgrade which is fine until it gets to the "Install the update orchestrator agent" step which it fails saying :

Type 'Deployment' of Role 'AgentLifecycleManager' raised an exception: Failed to complete deployment of ALM - Failed to complete deployment of ALM on servername - Adding ALM's virtual account to local admin group on servername failed. NT SERVICE\AzureStack Agent Lifecycle Agent is not added to local admin group on servername. Error: Get-LocalGroupMember : A local account with the SID 'S-1-5-21-4179914148-1131336781-1852958950-43737' was not found.

I've checked and the above SID is there already and so is the lifecycle agent account.

thanks

No repository file, test, or entry point is named. Start by reproducing the Azure Local 23H2 upgrade failure at the “Install the update orchestrator agent” step and inspect the Get-LocalGroupMember error involving the Agent Lifecycle Manager account. Done means identifying a verified resolution for the missing or unrecognized SID and documenting it.

Written by the indexing model from the issue text.