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On 64bit Windows 7 system RTM (fully patched), I'm trying to "turn windows features on".

I select a few items (say "Games" or "Telnet Client"), and I keep getting the following error:

An Error has occurred. Not all of the features were successfully changed.

Is there a solution?

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Silly me, I found the answer - I was trying this from a non-administrator user account.

Switching to an admin account worked.

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