“There was an error while performing this operation”

Question

I have a website in IIS for which I cannot open any of the settings like Authentication, Handler Mappings, Authorization Rules etc. It just shows the error message \"There was a

Answer 1

I had this issue lately , the solution for me was installing : ASP.NET Core/.NET Core: Runtime & Hosting Bundle. You can find it here.

Also before installing it , make sure your wwwroot security permissions is set to allow both iis_iusrs and iusr to have Read, Write and Execute permissions.