Question

I added the Manifest file with the element

<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />

I built the project and it keeps crashing when a non-administrator runs it.

Unhandled Exception: System.Security.SecurityException: Request for
the permissi on of type
‘System.Security.Permissions.RegistryPermission, mscorlib, Version=2.
0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand,
StackCrawlMa rk& stackMark, Boolean isPermSet) at
System.Security.CodeAccessPermission.Demand() at
Microsoft.Win32.RegistryKey.CheckSubKeyReadPermission(String
subkeyName) at
Microsoft.Win32.RegistryKey.CheckOpenSubKeyPermission(String
subkeyName, B oolean subKeyWritable) at
Microsoft.Win32.RegistryKey.OpenSubKey(String name, Boolean writable)
at
LotusTrustedSites.RegistryKeyExtensionMethods.GetOrCreateSubKey(RegistryKe
y registryKey, String parentKeyLocation, String key, Boolean writable)
at LotusTrustedSites.ReportDownloader.Main(String[] args) The action
that failed was: Demand The type of the first permission that failed
was: System.Security.Permissions.RegistryPermission

The assembly or AppDomain that failed was: MyApp, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=null The method that caused the
failure was: Microsoft.Win32.RegistryKey
GetOrCreateSubKey(Microsoft.Win32.RegistryKey, Syste m.String,
System.String, Boolean)

Answer 1

Of course it fails. You told it to require administrator access, and non-administrator accounts don’t have the ability to provide that. Did you expect it to run with administrator privileges for non-admin users? That would be a major security flaw in Windows if it were possible.

If you need an app to run as an administrator that is accessible to non-admins, the only way I know to do it is to install the app as a scheduled task, and set the task to run using an admin account. Non-admins should still be able to see and run this task, and it will use the supplied admin credentials.