There are often times when you need to install Windows 10 evaluation or testing in a virtual machine like VirtualBox for example. You may not want to activate it every time with your licensed product key that you use on a real machine. For that purpose, you can use generic keys for Windows 10 available from Microsoft, which will allow you to install the OS, but won't allow you to activate it. As long as you have an ISO image or any other bootable media containing Windows Setup files you can install the OS using a generic key.
WINDOWS 10 ACTIVATION KEYS FOR ALL WIN 10 EDITIONS. Windows 10 x64 bridges the gap between PCs and tablets without alienating anyone. The new OS combines the best bits of old and new Windows features into a cohesive package while correcting nearly all of the missteps of Windows 8. Windows 10 retail/digital product key and activation: If you bought retail license of Windows 10, or got a digital product key either from Windows Store, MSDN, DreamSpark, TechNet and the likes, you obviously have a unique product key that you can enter in Windows setup during clean installations.
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Generic Keys to Install Windows 10 Fall Creators Update
There is a set of generic keys available for Windows 10 at this moment.
To install Windows 10 Fall Creators Update with a generic key, use the following keys:
- Windows 10 Home
- Windows 10 Home N
- Windows 10 Pro
- Windows 10 Pro N
- Windows 10 Pro for Workstations
- Windows 10 Pro N for Workstations
- Windows 10 Pro Education
- Windows 10 Pro Education N
- Windows 10 Education
- Windows 10 Education N
- Windows 10 Enterprise
- Windows 10 Enterprise N
- Windows 10 Enterprise S
- Windows 10 S
Remember, these keys can only install Windows for evaluation or testing for a short time. It's not possible to activate it unless you enter a genuine key purchased from Microsoft. Once you decide to activate your installed OS, you will need to change the generic product key to the actual key you purchased. Here is how you do it:
That's it.
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As promised yesterday during the media event, Microsoft has made available for download the Technical Preview build of its upcoming Windows 10 operating system. Even though the Preview is intended for enthusiasts and IT Pros, anyone can install and experience the preview build for free.
To download the ISO copy of Windows 10, which is available in both 32-bit and 64-bit flavours, one needs to head over the Windows Insider Program page and join the Insider Program. After downloading the ISO image copy of Windows 10, you can either install and test it in a virtual machine such as VirtualBox or install Windows 10 on your PC from USB drive.
Whether you want to install Windows 10 Preview on a virtual machine or on a spare PC, you need the product key to complete the installation. Those of you have downloaded Windows 10 ISO image after joining the Insider Program, probably have noticed the product key on the download page.
If you didn’t notice the product key while downloading the ISO image or if you have downloaded the ISO image directly without joining the insider program, you can use the below mentioned product key to install Windows 10 on your PC.
Product key to install Windows 10
When you’re asked to enter a product key, please enter one of the following keys depending on the edition of Windows 10 you’re installing or activating.
Windows 10 Home: TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
Windows 10 Pro: VK7JG-NPHTM-C97JM-9MPGT-3V66T
Windows 10 Enterprise: NPPR9-FWDCX-D2C8J-H872K-2YT43
When you renew your AVG you will receive a new licence key. The step-by-step instructions below show you how to reactivate AVG. Step-by-step Instructions. Open the AVG User interface. (Double click on the AVG icon in the task bar – bottom right of your PC screen) 2. Click on the “Menu” drop down menu and select “About” as shown below: 3. I apologize for Bhuvaneswari post. As per our record you have purchased the license for AVG PC tuneup. I don't see any subscription purchased for AVG protection. I guess you would have installed our new AVG protection free multidevice program which has the Zen interface in it. 
I found the link to download AVG Tuneup with no crap Zen and used my license key from a year ago to reactivate it. Get rid of Zen or make it an option not to use from the main AVG homepage so people don't have to go through Support just find version without Zen.
Windows 10 Activation Serial Key
These product keys can be used to activate all preview builds of Windows 10 that are officially released by Microsoft, which also means that the key might not work on leaked Windows 10 builds!
Start Windows 10 Without Password
Note that the above mentioned Windows 10 product keys work irrespective of the architecture of Windows 10, meaning they support both 32-bit and 64-bit. Just make sure that you’ve typed the 25-character correctly, without any mistakes. Note that all these Windows 10 product keys are offered by Microsoft.