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Window vista frequently encounters lots of error message due to a variety of reasons. The error message concerning the activation codes are common in windows vista. The windows vista error message “your activation period has expired” happens because you fail to activate your windows operating system vista within the activation period. And when you normally start your system then you receive error message, they like that:

“Activate Windows Now.
Your activation period has expired and Windows is no longer working.
To use Windows you must activate this copy of Windows.”

There may be, this problem appears on your system for one or more of the following reasons. Some of the main reasons behinds this windows vista error message occur on your Pc are:


  • You did not activate windows vista within the activation period (that is 30 day).
  • Windows vista detects that the hardware on your computer has changed significantly and that you did not reactivate windows vista within the 3 day grace period for reactivation.
  • You are running a version of windows vista that was detected as non-genuine.
  • The most common reason behind this error is installing incompatible or outdated driver, missing system files, corrupted registry file or damaged pc by viruses. Advanced System Repair Tool is the only solution for all the system errors. By installing this tool you will be able to remove above windows error.
    3 Steps to Fix this Error

    Step 1. Download Advance System Repair Tool [File Size: 15.7 MB]
    Step 2. SCAN your Windows PC
    Step 3. Click Fix button to Repair Error

There are too many methods to solve the windows vista activation error message:

Method 1: Change or enter your product key.

  1. In the “activate windows now” pop-up message windows that appears when you first log on to windows vista
  2. Press on the “Retype your product key”.
  3. When you are prompted to accept the specified user name, then press on Ok button.
  4. Type the product key from windows vista CD sleeve or on the windows vista CD case.
  5. After this press on next button and the click finish.

Method 2: activate windows vista by using the automated telephone system.

To activate windows vista by telephone, you must use an automated telephone system. To activate vista by using the automated telephone system, follow these steps:

  1. Go to start, then open computer.
  2. On the toolbar, press system properties.
  3. If you are prompted for an administrator password or for confirmation.
  4. Type the password, and then click continue.
  5. Press on “show me other way to activate”.
  6. And after this hit on use the automated phone system.
  7. Then follow the instructions.

Method 3: You can also use third party repair tool or Advanced System Repair Tool tool to solve any windows problem and also solve this activation problem. This software is providing to you many functions like fix registry entries delete file extensions etc.

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Error message when you start Windows Vista: “Your activation period has expired”

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