Search Microsoft.com
Explore
"Certificate of Authenticity"
Find your Windows product key - Microsoft Support
The product key is preinstalled on your PC, included with the packaging the PC came in, or included on the Certificate of Authenticity (COA) attached to the...
Activate Windows - Microsoft Support
When you buy a refurbished device running Windows 10, you'll need to activate Windows using the product key on the Certificate of Authenticity (COA) that's...
How To Tell - Packaged Software - microsoft.com
The Certificates of Authenticity (COA) label is used on the outside of retail boxed software and explains what the product is, its country of intended use...
How To Tell - What to Look For - microsoft.com
Learn more about features included with genuine Microsoft software, including the packaging, installation CD/DVD/USB, product key labels, and the...
About Genuine Windows - Microsoft Support
Look for key features of genuine Windows software, such as the Certificate of Authenticity (COA), a proof of license label, and an edge-to-edge hologram...
Obtain a digital certificate and create a digital signature
If you plan to exchange digitally-signed documents together with other people, and you want the recipients of your documents to be able to verify the...
Digital signatures and certificates - Microsoft Support
A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A...
Windows のプロダクト キーを探す - Microsoft サポート
プロダクト キーは PC にプレインストールされているか、PC が梱包されているパッケージまたは PC に付属の Certificate of Authenticity (COA) に記載されています。 詳細については、ハードウェアの製造元にお問い合わせください。
Find your product key for Office 2010 - Microsoft Support
Tip: You may have one certificate of authenticity for Windows and another for Office. Please make sure you’re using the correct certificate of authenticity...
KB5014754—Certificate-based authentication changes on Windows domain ...
Summary. CVE-2022-34691, CVE-2022-26931 and CVE-2022-26923 address an elevation of privilege vulnerability that can occur when the Kerberos Distribution...
How do I retrieve my certificate of authenticity?
If your certificate of authenticity is worn out or damaged, you need to contact the manufacturer of your laptop for a replacement product key. New computers...
Planning Certificate-based Authentication | Microsoft Learn
When the clients and servers have the certificates available, you can configure the IPsec and connection security rules to include those certificates as a...
Stay safe with a genuine Office license - Microsoft Support
Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report...
Certificate design templates | Microsoft Create
Find free certificate templates for any occasion that can be customized in Word or PowerPoint. Each certificate can be quickly and easily personalized to...
How To Tell - Hardware PC Purchase - microsoft.com
Certificate of Authenticity (COA) The COA is a sticker or a label that is often attached to the body of a computer for some versions of Windows or Windows...
certificate of authenticity - Microsoft Community
Does it have a 25 digit key on it? if not, it's just a certificate saying your office software is authentic. You need to redeem the software key to activate...
Fulfillment | Microsoft Volume Licensing
Windows Upgrade operating system software licensed through Volume Licensing agreements can be placed only on computers that have an appropriate Certificate...
Communication page | Licensing FAQ
Q. What is a Certificate of Authenticity (COA) label? A. A Certificate of Authenticity (COA) label helps you and your customers identify genuine Microsoft...
How To Tell - Shop - microsoft.com
Does it come with a Genuine Microsoft Label or Certificate of Authenticity (COA)? (view genuine labels for Software preinstalled on a PC. or Packaged...
How To Tell - Xbox games - microsoft.com
Xbox Certificate of Authenticity (COA) To confirm that you have a genuine Xbox game, look for the Certificate of Authenticity (COA) affixed to the opening...
Can't find what you're looking for?
Search tips
- Make sure all words are spelled correctly.
- Try different keywords.
- Search the web with Bing