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Editorial Team
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Asked: 2026-05-13T14:20:30+00:00

I’m running windows 7 64-bit and iis7. I’m trying to setup a web application

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I’m running windows 7 64-bit and iis7. I’m trying to setup a web application that was previously in iis6 on XP. It’s giving me the error below. I’ve added the network service user to the Performance Monitor Users group to no avail.

Access to the registry key ‘Global’ is
denied. Description: An unhandled
exception occurred during the
execution of the current web request.
Please review the stack trace for more
information about the error and where
it originated in the code.

Exception Details:
System.UnauthorizedAccessException:
Access to the registry key ‘Global’ is
denied.

ASP.NET is not authorized to access
the requested resource. Consider
granting access rights to the resource
to the ASP.NET request identity.
ASP.NET has a base process identity
(typically {MACHINE}\ASPNET on IIS 5
or Network Service on IIS 6) that is
used if the application is not
impersonating. If the application is
impersonating via , the identity
will be the anonymous user (typically
IUSR_MACHINENAME) or the authenticated
request user.

To grant ASP.NET access to a file,
right-click the file in Explorer,
choose “Properties” and select the
Security tab. Click “Add” to add the
appropriate user or group. Highlight
the ASP.NET account, and check the
boxes for the desired access.

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1 Answer

  1. Editorial Team

    The problem is that user in Windows is known as DefaultAppPool. However he doesn’t show up anywhere in the security dialogs. He is an actual user though. My problem was I needed that user to be part of the PerformanceMonitorUsers group because my web service was using PerformanceCounters. Turns out you have to do it from the command line.

    net localgroup “Performance Monitor Users” DefaultAppPool /add

    Occasionally that does not work and it will give you the error: “There is no such user or group: DefaultAppPool”

    To add the user a different way:

    1. Go to the Start menu in Windows 7.
    2. Type “Edit Users” in the search box.
    3. Open “Edit Local Users and Groups”.
    4. Go to the groups folder.
    5. Right-click on the “Performance Monitor Users” group and go to properties.
    6. Click the Add… button.
    7. Type in “IIS APPPool\DefaultAppPool” and click Check Names.
    8. Click OK and you should be good to go.
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