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I've requested that this question be deleted for the following reason:

This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.

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Still testing not found a good sulution
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I want to update some changes to the DLL in GAC.<br />
so I use the following statement:<br />
C:\myfoleder\bin\release&gt; gacutil /i MyCompany.MyDomain.Somethi<wbr />ng.dll /f<br />
But I got an error:<br />
Failure adding assembly to the cache: Access denied. You might not hav administrative credentials to perform this task.<br />
<br />
So I turned off my UAC. And I am a member of administror. <br />
But I still got the above error. Any help and suggestion are very appreciated!!!
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I want to update some changes to the DLL in GAC.
so I use the following statement:
C:\myfoleder\bin\release> gacutil /i MyCompany.MyDomain.Something.dll /f
But I got an error:
Failure adding assembly to the cache: Access denied. You might not hav administrative credentials to perform this task.

So I turned off my UAC. And I am a member of administror. 
But I still got the above error. Any help and suggestion are very appreciated!!!

update dll in GAC under windows 7 64Bits

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.

Windows 7

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.