Having issues while trying to move App MasterUser to ServicePrincipal using .NET Core

Hi saadashraf ,

On windows consider using HttpUtility:UrlEncode(<client_secret>).
Reference Microsoft documentation:
https://docs.microsoft.com/en-us/dotnet/api/system.web.httputility.urlencode?view=netframework-4.8 

Or you can recreate the resource.

There is also a similar post you can refer:

https://github.com/Azure/azure-libraries-for-net/issues/974

Best Regards,

Stephen Tao

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.