Windows 11 professional 32/64 bit 1PC 日本語正式正規版認証保証ウィンドウズ win11 OS ダウンロード版プロダクトキーライセンス認証永久

Microsoft Windows 11 Pro — 32/64-bit, 1 PC, Japanese Version (Download Edition)

On sale Microsoft

Windows 11 Pro key for one PC, delivered by email

Prices include tax / download editions are available as soon as payment is complete

Release date: 2026/01/05

A Japanese-version Windows 11 Pro product key for one PC, sent by email for 32-bit or 64-bit installation and activation.

Genuine manufacturer license
Free shipping on orders over ¥3,980
Unopened items can be returned within 30 days
ダウンロード版（プロダクトキーをメールでお送りします）

Manufacturer	Microsoft
Supported OS	Windows 11 / 10
License	1 device(s)

This listing provides a Japanese-version Windows 11 Pro product key for one PC, with both 32-bit and 64-bit installations supported.

Windows 11 Pro is intended for businesses and individuals who want more from their computer. Security features include BitLocker device encryption to protect data on the drive, Windows Information Protection to reduce the risk of data leaks, and Windows Defender Antivirus for real-time protection against malware, working with Secure Boot and Trusted Boot to guard the startup process. Productivity features include Remote Desktop for connecting to the machine from elsewhere and Hyper-V virtualisation for running more than one operating system at a time. The key arrives by email.

Key details

Edition: Windows 11 Pro, Japanese version
Licence: 1 PC, perpetual use
Architecture: 32-bit / 64-bit
Delivery: download edition, product key by email

Manufacturer	Microsoft
Release date	2026/01/05
Supported OS	Windows 11 / 10
License	1 device(s)
Delivery method	Download edition (product key sent by email)

Support after purchase

Products you purchase can be re-downloaded at any time from My Account. Contact our Japanese-language support desk for help with installation or settings.