Solutions to IIS 401.1 Errors

I was running into some problems with IIS giving me 401.1 Errors in a website I had on a server once I had joined it to a domain. Here are some solutions that have worked for me in the past.

• Give the IUSR_COMPUTERNAME user read access to the directories provisioned in IIS.
• Delete the IUSR and IWAM users and restart IIS (http://support.microsoft.com/kb/822165) 

Don't worry, restarting IIS will recreate the IUSR and IWAM users. Hope that these solutions will save you time.