IIS 6.0 and ASP.NET – Could not write to output file … The directory name is invalid

asp.netasp.net-2.0iistemporary-asp.net-files

I'm running IIS 6.0 on Windows 2003 and started getting this error:

Compiler Error Message: CS0016: Could not write to output file 'c:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root\7382c13f\ea9b3ff7\App_global.asax.zodyof_q.dll' -- 'The directory name is invalid. '

I've checked all the permissions, and everything is as it needs to be – plus, the error message doesn't mention permissions. I've tried the following already:

  • Following the instructions from this [outdated] KB article: http://support.microsoft.com/kb/825791/en-us
  • Repairing the .NET Framework v3.5 installation, then rebooting
  • Deleting the contents of c:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root, then running iisreset
  • Resetting the permissions on c:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root, then running iisreset
  • Resetting the permissions on c:\WINDOWS\TEMP, then running iisreset.

Any suggestions?

Other notes/responses:

  • The Indexing service is disabled.

Best Answer

I've found an answer that is applicable if you've installed ANTS profiler and it crashed while profiling. This KB Article describes one of the solutions:

http://www.red-gate.com/supportcenter/Content.aspx?p=ANTS%20Profiler&c=knowledgebase\ANTS_Profiler\KB200903000362.htm

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