A digital signature on an e-mail message helps the recipient verify that you are the authentic sender and not an impostor. To use digital signatures, both the sender and recipient must have a mail application that supports the same encryption type.

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Find answers to some of your questions about the Xbox enforcement strike system.

Learn how to change Windows display language and keyboard/input layout settings. These settings affect the language displayed in Windows, in apps, and at websites.

For iOS, you'll first need to install TestFlight on your iOS device. You can find it here or in the App Store. Once TestFlight is installed, you can join from your device. You'll then be able to download and install our beta app via TestFlight.

Also, if you recognize a sender that normally doesn't have a '?' in the sender image, but you suddenly start seeing it, that could be a sign the sender is being spoofed (impersonated). You can learn more about Spoof intelligence in Exchange Online Protection in the Related topics section.

We are releasing a new Xbox Update Preview to the Delta ring today. Continue reading below to learn all about what's included with this update. Note If you have enabled Keep my console up to date, the update will download and install automatically.

Using remote access, these experienced scammers can misrepresent normal system messages as signs of problems. Scammers might also initiate contact by displaying fake error messages on websites you visit, displaying support numbers and enticing you to call.

The Signature Details dialog box displays certificate information such as the signer’s name in the Signing as box, and who issued the certificate. Open the file that contains the certificate you want to view.

We are releasing a new Xbox Update Preview to the Alpha ring today. Continue reading below to learn all about what's included with this update. Note If you have enabled Keep my console up to date, the update will download and install automatically.