Access denied to VisualStudio_10 entries in windows7 registry

When I try to access *HKEY_CLASSES_ROOT\VisualStudio.cs.10* or any other entry of VisualStudio that end开发者_如何学JAVAs with 10 I get the following error VisualStudio.cs.10.0 cannot be opened. An error is preventing this key from being opened. Details: Access is denied.

What can be the problem?

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Did you start your Visual Studio "As Administrator..."?
EDIT:
See my comment below...
Check the owner of the registry entry.