How do I resolve self-signed certificate errors? How do I create a digital certificate? Give me a quick list to resolve certificate errors.

Learn how to troubleshoot and fix problems setting up your email in Outlook.

If you think your Microsoft account has been hacked, find out how to secure your account and check for unauthorized activity.

Learn about XBOX online safety so you can manage your family's accounts.

This article has guidance for: IT administrators who need visibility into Secure Boot certificate update status from their Intune enrolled Windows devices Organizations preparing for the June 2026 Secure Boot certificate expiration deadline Teams that want to monitor certificate rollout progress across their Intune enrolled Windows devices In this article: Introduction Prerequisites Detection ...

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Microsoft Authenticator FAQs Caution A common trick of attackers is to contact you via text or phone pretending to be your bank, IT support, or other service provider and saying they need you to read them the code from your Authenticator to verify your identity on the call. Don't give them the code - they're trying to break into your account and are stuck at the verification prompt. No real ...

Windows Server 2019 Windows 10, version 1809 Applies to: Windows Server 2019 This security update includes fixes and quality improvements that are part of the following update: April 14, 2026—KB5082123 (OS Build 17763.8644) April 19, 2026—KB5091573 (OS Build 17763.8647) Out-of-band The following is a summary of the issues that this update addresses when you install this update. The bold ...

iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.