so for some reason ASP pages stopped working on a box here, with pages returning HTTP 500 Internal server error & getting error 10001 in the event log.
all the pages out on the net pointed to resetting user permissions on the entire drive -- turns out the underlying problem & fix was simpler than that.
here's the original error message in the event log:
Event Type: Error
Event Source: DCOM
Event Category: None
Event ID: 10001
Date: 3/5/2001
Time: 9:59:40 AM
User: NT AUTHORITY\SYSTEM
Computer: MACHINE-NAME
Description:
Unable to start a DCOM Server: {99169CB1-A707-11D0-989D-00C04FD919C1} as ./IWAM_MACHINE-NAME. The error: "Access is denied. " Happened while starting this command: C:\WINNT\System32\dllhost.exe /Processid:{3D14228D-FBE1-11D0-995D-00C04FD919C1}
to help diagnose the problem, we decided to change the isolation level in iis, and thus manifested a different error message.
Source: DCOM
Event ID: 10010
User: NT AUTHORITY\SYSTEM
Description: The server {3D14228D-FBE1-11D0-995D-00C04FD919C1} did not register with DCOM within the required timeout.
cause :
The problem resulted from The NT AUTHORITY\Authenticated Users or NT AUTHORITY\INTERACTIVE entries have been removed from the Users group.
solution :
don't know when or why that happened. but the solution was easy, just put the users back in the group
http://support.microsoft.com/kb/327153/EN-US/
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q309051&