Article ID: 300432
This article discusses the implications of promoting an Internet Information Services (IIS) 5.0 computer that is a member server of a domain to a domain controller, and what you must do if you want the IIS member server to remain a Web server after you promote it to a domain controller.
It is recommended that you run IIS 5.0 on either a member server of a domain, or a workgroup server (where no domain is present).
After you execute Dcpromo.exe to start the domain controller promotional process, you are warned that all user accounts on the computer will be deleted. This includes the two user accounts that IIS uses, IUSR_<computer_name> and IWAM_<computer_name>.
This is by design. To resume using IIS after the computer has been promoted to a domain controller, you can either use existing domain accounts for the IUSR and IWAM accounts, or you can create these accounts. You need to ensure that the anonymous user account information in the metabase can be accessed within the Internet Services Manager at the Master Properties level, as well as by the IIS Out-Of-Process Pooled Applications package that is within Component Services, or by any other package that you have set to use the IWAM account.
You should ensure that you grant the following user rights for these accounts: