When registering your data warehouse you may encounter the “the data warehouse registration failed” error. Very little information is provided and the error happens right after you click Create, leaving one to think this look like a security issue.
The wizard shows
The solution is however much easier. For the registration to work you need to run Powershell.exe (as an administrator) and run Set-ExecutionPolicy unrestricted or Set-ExecutionPolicy remotesigned depending on your security preferences.
If your Service Manager 2012 console is running then restart it prior to retrying the registration process.