HRESULT 80070545 on Win2k Domain Controller

If you're ASP .Net page is hosted on a Domain Controller you may get a Server Application Unavailable error when trying to browse to your .Net page. This message usually puts an error in the Application section of the Event Log on the server. There are a few different errors that will cause this, and it takes a bit of investigation to narrow it down. If your event log gives you one of the following:
[color red]aspnet_wp.exe could not be launched because the username and/or password supplied in the processModel section of the config file are invalid.
aspnet_wp.exe could not be started.
HRESULT for the failure: 80004005[/color]

you may want to check out this Knowledge Base article:
(Q315158)
http://search.microsoft.com/gomsuri.asp?n=1&c=rp_Results&siteid=us/dev&target=http://support.microsoft.com/support/kb/articles/Q315/1/58.asp

However the HRESULT 80070545 error (which appears as [color red]aspnet_wp.exe could not be started. HRESULT for the failure: 80070545[/color] in the Event Log) is not very well documented, as far as I could see.

I found that by giving your ASPNET account Write access to your %SystemRoot%\Microsoft.NET\Framework\v1.0.3705 folder you could then procede without the error.

Hope that helps, it would have saved me some searching, so I thought it would help.