How to Delete Windows Activation Files

Written by katrina matterhorn
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How to Delete Windows Activation Files
Nagware notifications can prevent you from downloading and updating essential Microsoft software. (laptop image by Angie Lingnau from

Windows activation files were created by Microsoft to authenticate the validity of your software. If, for any reason, it detects that you have a copy or are using software illegally, these notifications will pop-up. On the other hand, it can be a form of "nagware" that will be prompted even if your software is legitimate. These notifications prevent you from downloading and updating essential Microsoft software. Deleting windows activation files requires a few steps.

Skill level:
Moderately Easy


  1. 1

    Open your task manager by pressing "ctrl", "alt" and "delete" all together. Hit the "Processes" pane. Click on "wgatray.exe" and then click on "End process."

  2. 2

    Click on the "Start" tab and hit "restart." Press "F8" repeatedly until "Windows advanced options menu" pops up. Select "Safe" mode and type in your user name and administrative password.

  3. 3

    Click on "My computer." Click on the "C" drive, then hit the "Windows" folder, and then click on the "System32" folder. Find the "wgatray.exe" file, right-click on it and delete it. Click on the "dllcache" to open it and locate the "wgatray.exe" file. Right-click on this and delete it.

  4. 4

    Hit the windows "Start" tab and click "Run." Type in "regedit" and hit "enter." Locate the "HKEY_LOCAL_MACHINE" on the left and click on "Software," then click on "Microsoft" and then hit "Windows NT." Click on "Winlogon." Then hit "Notify" Right click on the "Winlogon" folder and delete it.

  5. 5

    Clear your recycle bin and reboot your computer.

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