For many applications, the User Account Control implementation of Vista turns out to be obtrusive. In particular, an application that needs access to a shadow copy may be denied access even if it has the �correct� permissions for the operation it wishes to perform. Often, once the code has been deployed, the only remedy for this problem will require the user to �run with an elevated token.� This is because applications normally run with only the level of access granted in a standard user access token, even if they have been started by a user that is a member of the local Administrators group. The Time Information Service� is a WCF interface that provides, among other things, the needed bridge between C# managed code and C++ or .NET (unmanaged) code and an interface to the complete set of VSS methods.
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