Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

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“Contact support” “Something happened on our end. Waiting a bit might help” “This one isn’t working. Contact your bank for more info” “Try a different way to pay” “Check with your bank” "Incorrect region”

Want to add a padlock to your email messages? You can use encryption and digital signatures in new Outlook, classic Outlook, and Outlook on the web for work or school accounts to increase the security of messages. Encrypting an email message in Outlook means it's converted from readable plain text into scrambled cipher text. Only the recipient who has the private key that matches the public ...

If you’re tired of having to remember or reset your password, try using a FIDO2–compliant security key to sign in to your Microsoft account instead. What is a security key? A security key is a physical device that you can use instead of your user name and password to sign in. Since it needs to be unlocked with a fingerprint or PIN, even if someone has your security key, they won’t be ...

Learn how to fix error 0x87e5002b so you can perform an update and get back to your game.

As a meeting organizer, you can choose who has access to your meeting’s recording, AI recap, and transcript. Select from three options: (1) Everyone, (2) Organizers and co-organizers, or (3) Specific people. Everyone: Everyone in the meeting can access. Organizers and co-organizers: Only the people who organized the meeting can access. Specific people: In addition to the organizer (s ...

Summary The /INTEGRITYCHECK linker option provides Windows kernel digital signature verification for user mode Portable Executables (PE) files. This linker option is required for anti-malware and anti-cheat scenarios to register components with the Windows Security Center. You must sign IntegrityCheck-linked user mode PEs using Trusted Signing (formerly Azure Code Signing). The cross-signing ...

Synchronization of contacts between your Outlook account and your Apple iPhone or iPod touch requires Apple iTunes. You can configure which items are synchronized during a one-time set up process.

Customer support Contact us Xbox status Your Microsoft account Microsoft accessibility conformance report Resources Xbox News Feedback Community Standards Photosensitive seizure warning Product safety For developers