Windows 11 24H2 repair issues

[William Martin]

I had numerous issues with the 24H2 upgrades on a new Win 11 pc. ACP and Scheduler were working but other issues meant I could not get all of the observatory equipment to work at once. I decided to reset the pc. A Win 11 24H2 'repair' upgrade was offered. Fatal mouse click.

Now ACP Expert modules, my telescope driver and roof controller give a 'Class not registered' run time error and will not run. The attached image shows the message which is identical for all the affected apps. Various other apps like Norton, Adobe are not affected.

The web indicates these are probably unregistered DLLs but the suggested fixes seem to address Microsoft's apps only.

I would be extremely grateful for a recipe to get ACP and the other observatory apps running again.