Error code 0x80070005
When you try to use a KMS host, a KMS client, or a MAK to activate one or more computers, you may receive the following error message:
Access denied the requested action requires elevated privileges.
This issue occurs if User Access Control (UAC) does not let the activation processes run in a non-elevated command prompt.
To work around this issue, follow these steps:
1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as.
2. Click The following user, and then select Administrator in the User name list.
3. Click OK.
4. At a command prompt, type the following command, and then press ENTER: