Windows 9 Product Key Viewer

Windows 9 Product Key Viewer is a small-sized and portable software application that can be used for recovering the serial number of your operating system, in case you have lost or forgotten it. It comes in handy when you're planning to reinstall Windows to get a fresh copy, for instance. It does not include complicated options, making it suitable to all types of users, and it works for the latest Windows version as well as older ones (until XP).

No installation necessary

Since installation is not a prerequisite, you can drop the executable file in a custom directory on the HDD and just click it to run. There is also the possibility of saving Windows 9 Product Key Viewer to a USB flash disk to directly run it on any computer with minimum effort and no previous installers.
What's more, the Windows registry does not get updated with new entries, and no other files are created on the HDD without your permission, leaving it clean after removal.

Straightforward interface with intuitive options

The interface is made from a small window with a simple structure, where the "what you see is what you get" concept clearly applies, since there are no other options available, apart from the ones visible in the main frame.

Fetch the Windows key, back up and restore it

The OS serial key is immediately shown at initialization, and you can copy it to the Clipboard with the click of a button. In addition, you can ask the app to show the Internet Explorer and MSDM keys as well.
Instead of copying the serial number to the Clipboard, the tool can be asked to back it up by saving it to a file automatically created in the same location as the executable (provided that Windows 9 Product Key Viewer is not launched from within an archive or a read-only device), which can be later restored from the main frame with one click. Another tab shows some basic system information, such as Windows edition and activation state.

Evaluation and conclusion

As expected, the software utility has minimal impact on computer resources, since it runs on a very low quantity of CPU and RAM. It is very responsive to commands, shows accurate information and works well, without causing Windows to hang, crash or pop up error dialogs. We have not come across any issues throughout our tests.
All in all, Windows 9 Product Key Viewer serves its purpose. Thanks to its overall simplicity, even people with no previous experience in computer software can easily figure out this tool.