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Windows Product Key Viewer

Buy Portable Wifi Japan Online

Instantly retrieve your Windows license key

FREE NEW v3.03
Jump to: Overview Gallery History Download

Buy Portable Wifi Japan Online

If you choose to rent, book at least 2–3 days before your arrival to ensure your device is waiting at the airport pickup counter or your hotel.

: A popular reliable choice available at almost every major Japanese airport. They offer tiered plans (e.g., 1GB, 3GB, or 10GB per day) that provide a good balance of cost and performance.

: Highly recommended for its excellent English-language customer support and simple, easy-to-book unlimited plans. 2. Buying Portable Wi-Fi

This is the standard choice for visitors. You pick up the device at the airport or your hotel and return it via a prepaid envelope at any post box before you fly home.

Screenshots

Windows 11 Screenshots

Windows Product Key Viewer displaying system information on Windows 11

When you load Windows Product Key Viewer it will display this screen with detailed system information. For privacy, clicking "Reveal Windows Product Key" shows the key for only 30 seconds.

Windows Product Key Viewer extra information on Windows 11

The Extra Information tab retrieves additional details from Windows 11.

Windows Score in Windows Product Key Viewer

The Windows Score (Windows Experience Index) displays a numerical rating of your hardware performance. A higher score means better performance.

Windows Updates tab in Windows Product Key Viewer

The Windows Updates tab shows installed updates, Knowledge Base IDs, install dates, and descriptions.

Save output to text file

Use File > Save to export all displayed information to a text file for archival purposes.

Genuine Product Key Detection

Genuine vs pirated Windows product key comparison

Comparison between a genuine Windows product key and a pirated key. The software detects this and displays clear indicators.

Non-genuine Windows product key warning

If your Windows product key is determined to not be genuine, Windows may display a warning dialog. buy portable wifi japan

Windows 10 Screenshots

Windows Product Key Viewer on Windows 10 Home

Windows 10 Home with a non-genuine product key. You can still copy the key, but the status is clearly indicated.

Windows Score not supported

When your version of Windows does not support the Windows Score metrics.

Extra information from Windows 10

The Extra Information tab with details retrieved from Windows 10.

Windows 7 Screenshots

Windows 7 Ultimate non-genuine key

Windows 7 Ultimate Edition with a non-genuine product key detected.

Windows 7 extra information

On older Windows versions, some fields like ReleaseID and Display Version are not available.

Windows Product Key Viewer on Windows 7

Windows Product Key Viewer displaying information from Windows 7. If you choose to rent, book at least

Non-genuine key with red indicator

When a product key is not genuine, the border around the Genuine Logo flashes yellow and red with a thumbs-down indicator.

Windows Server Screenshots

Multi Volume License on Windows Server

A Multi Volume License detected on Windows Server. Volume licenses are cost-effective agreements for businesses to install Windows on many devices.

Volume License key display

When the installed Windows uses a Multi Volume License, the product key displays as BBBBB-BBBBB-BBBBB-BBBBB-BBBBB since no unique key is assigned.

Windows Server 2012 extra information

Windows Server 2012 with some fields unavailable despite having a genuine key.

Legacy Screenshots

Screenshots from Windows Product Key Viewer v2.00 on older operating systems:

Support development message

When closing the application, a message invites you to support continued development. If you choose to rent

RJL Software splash screen

The splash screen appears briefly after the support message and closes automatically in 10 seconds.

Windows Server 2003 product key

Windows Product Key Viewer displaying a Windows Server 2003 product key.

Windows Server 2003 64-bit product key

64-bit Windows product key detection on Windows Server 2003.

Windows Vista product key under VMware

Windows Vista Ultimate running under VMware. Virtual machine detection is noted in the output.

Windows 98 product key

Windows 98 product key retrieval. If you still use it, we still support it!

If you choose to rent, book at least 2–3 days before your arrival to ensure your device is waiting at the airport pickup counter or your hotel.

: A popular reliable choice available at almost every major Japanese airport. They offer tiered plans (e.g., 1GB, 3GB, or 10GB per day) that provide a good balance of cost and performance.

: Highly recommended for its excellent English-language customer support and simple, easy-to-book unlimited plans. 2. Buying Portable Wi-Fi

This is the standard choice for visitors. You pick up the device at the airport or your hotel and return it via a prepaid envelope at any post box before you fly home.

What Users Are Saying

★★★★★ 4.9 out of 5 Based on 18,733 ratings
500,000+ downloads
★★★★★

"Saved me during a Windows reinstall. Retrieved my product key in seconds when I thought it was lost."

-- Jason R., IT Admin
★★★★★

"I keep this on a USB drive. It is the first tool I use on every support call."

-- Amanda G., Tech Support
★★★★★

"Audited 200 workstations using this tool. The genuine license detection is a lifesaver for compliance."

-- Carlos M., Sysadmin

Download Windows Product Key Viewer

Version Comparison

Featurev3.03v2.00 (Legacy)
Windows 11/10/8/7YesLimited
Windows Vista/XP/98/95NoYes
Genuine License DetectionYesNo
Windows Updates ListYesNo
Windows ScoreYesNo
IP Address DisplayYesNo
Advanced System DetailsYesNo
64-bit SupportYesLimited
Windows Product Key Viewer v3.03
What's New in v3.03: Updated splash screen and RJL logo, Self-signed certificate validation, Reduced file size
Windows 7, 8, 10, 11+ · x64/x86
Download Download v3.03 Get a Genuine Windows Key
2.1 MB SHA256: 82741e9c3724...211a Freeware Updated: April 26, 2025
Windows Product Key Viewer v2.00 (Legacy)
Windows Vista, XP, ME, 98, 95, NT · x86
Download Download v2.00 Genuine Windows Keys
392 KB SHA256: 16f4f589a7e8...a428

Support Windows Product Key Viewer Development

We rely on community support to keep this software available at no cost. If Windows Product Key Viewer helped you recover your product key, please consider making a contribution. Every dollar helps fund the next update.

Support and Information

Frequently Asked Questions

Find answers to common questions about Windows Product Key Viewer.

View FAQ
Need Help?

Found a bug or have a question? We are here to help.

Contact Us
Uninstall

To uninstall, simply delete the program folder. No registry entries or system files are left behind.

How to Update

Download the latest version and extract over your existing folder, or to a new location. Settings are preserved.

Privacy: This software does not collect, transmit, or store any personal data. No internet connection required.

End-User License Agreement (EULA)

Missing Windows Product Key?

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