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Elisha Vorontsov
Elisha Vorontsov

How to Activate Windows 7 Without a Product Key Using Developer Activation (KB780190)


How to Activate Windows 7 Without a Product Key Using Developer Activation (KB780190)




If you are a developer who needs to test Windows 7 on multiple machines without using a product key, you might be interested in a tool called Windows 7 Developer Activation (KB780190). This tool allows you to activate Windows 7 installations without the need for a product key, by embedding a SLIC (Software Licensing Description Table) into the bootmgr file.




Windows 7 Developer Activation - kb780190



A SLIC is a digital signature that is recognized by the Windows activation process as a valid license. By using a SLIC embedded into the bootmgr file, you can bypass the online activation and use any OEM certificate and product key to activate Windows 7.


This method is similar to the one used by Windows Loader by Daz, but it does not require any additional software or drivers. It also works well with dual boot systems, as it does not modify the MBR (Master Boot Record).


In this article, we will show you how to use Windows 7 Developer Activation (KB780190) to activate Windows 7 without a product key.


Step 1: Download Windows 7 Developer Activation (KB780190)




The first step is to download the Windows 7 Developer Activation (KB780190) tool from the Internet Archive[^1^]. This tool was originally developed by Microsoft for internal use, but it was leaked online and is now hard to find. The Internet Archive has preserved a copy of it for historical purposes.


The tool consists of two files: bootmgr.exe and bootmgr.pdb. You will need both files to use the tool.


Step 2: Backup Your Original bootmgr File




The next step is to backup your original bootmgr file, which is located in the root of your system partition (usually C:\). The bootmgr file is responsible for loading the operating system and initiating the boot process. You will need to replace this file with the one from the tool, so it is important to make a backup copy of it in case something goes wrong.


To backup your original bootmgr file, you can use a command prompt or a file manager. For example, you can open a command prompt as administrator and type:


copy C:\bootmgr C:\bootmgr.bak


This will create a copy of your bootmgr file named bootmgr.bak in the same location.


Step 3: Replace Your Original bootmgr File with the One from the Tool




The final step is to replace your original bootmgr file with the one from the tool. To do this, you will need to copy both files from the tool (bootmgr.exe and bootmgr.pdb) to the root of your system partition (usually C:\).


You can use a command prompt or a file manager to do this. For example, you can open a command prompt as administrator and type:


copy /y bootmgr.exe C:\bootmgr


copy /y bootmgr.pdb C:\bootmgr.pdb


This will overwrite your original bootmgr file with the one from the tool and also copy the bootmgr.pdb file, which contains debugging information.


Step 4: Reboot Your System and Activate Windows 7




After replacing your bootmgr file with the one from the tool, you will need to reboot your system for the changes to take effect. When you reboot, you should see a message saying "Windows Developer Activation" on the bottom right corner of your screen. This means that your system has been activated using the SLIC embedded into the bootmgr file.


To verify that your system has been activated, you can open System Properties and check the activation status. You should see "Windows is activated" and a product ID that starts with "00426-OEM".


You can also use any OEM certificate and product key that matches your edition of Windows 7 to activate it. For example, you can use this certificate and product key for Windows 7 Ultimate:


slmgr.vbs -ilc e0e6b7cb5c


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