After installing SharePoint I can't run any traditional ASP.Net
application on the same server. When I try to go to an ASP.Net
application on this box outside of SharePoint, I get an error like
this:

Server Error in '/PA_DT_Manual' Application.
--------------------------------------------------------------------------------

Configuration Error
Description: An error occurred during the processing of a
configuration file required to service this request. Please review the
specific error details below and modify your configuration file
appropriately.

Parser Error Message: An error occurred loading a configuration file:
Access to the path 'c:\inetpub\wwwroot\web.config' is denied.

Source Error:


[No relevant source lines]


Source File: c:\inetpub\wwwroot\web.config Line: 0


--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.832;
ASP.NET Version:2.0.50727.832


To resolve this I was trying exclude path using Central
Administration--> Configure Virtual Server Settings--> My Web Site-->
Define Managed Paths where path is /PA_DT_Manual, but doesn't work.
After I was trying do the same by cmd ("STSADM.EXE -o addpath -url
http://localhost/PA_DT_Manual -type exclusion") but still the same
result.
Can anyone help?

Marek