When clicking Forgot My Password at the logon prompt, the following error is displayed:
Service not avaialable, please contact with your Administrator.
HTTP Error 401 - Unathorized: Access is denied due to invalid credentials. Please refer to IIS Help, which is accessible in IIS Manager (inetmgr), for more information.
This could be due to one or all of the following:
Ensure that Authenticated Users group (or similar group in your domain) has minimum permissions for NTFS Security - Read & Execute, List Folder Contents and Read.
To check this, do the following: