Is mydefender@microsoft.com a Legitimate Microsoft Email Address?
Learn how to verify if mydefender@microsoft.com is a legitimate email address, handle Microsoft Defender dark web alerts, and protect your account from phishing.
Read more ›Security Issues
Clear security blocks in Office—Protected View, macros, Trusted Center, and unsafe document warnings—safely.
Latest
2215 ResourcesRequired Azure Role to Manage User Authentication Methods in Entra ID
Learn which Microsoft Entra ID administrator role allows IT staff to manage and reset user authentication methods without Global Administrator permissions.
Read more ›Can Azure AD Users View Local Administrator Passwords with Windows LAPS?
Learn how Windows LAPS handles local administrator password visibility for standard Azure AD users in a hybrid environment, including permission management.
Read more ›How to Disable Quarantine Notifications for Specific Microsoft 365 Users
Learn how to disable Microsoft 365 quarantine notifications for specific users. Discover how to use Exchange mail flow rules and manage Defender threat policies.
Read more ›What to Do After Submitting a Microsoft Notice of Dispute
Learn the essential steps to secure your compromised account after submitting a Microsoft Notice of Dispute, including password resets and official support.
Read more ›How to Fix Windows Defender Threat Alerts That Will Not Clear
Learn how to resolve persistent Windows Defender threat alerts and clear stuck scan history safely using Safe Mode, PowerShell, and full system scans.
Read more ›How to Recover a Compromised Microsoft 365 Administrator Account
Learn the immediate steps to take if your Microsoft 365 global administrator account is compromised, including password resets and contacting Microsoft support.
Read more ›How to Check Unrecognized Microsoft 365 Sign-In Locations
Learn why Microsoft 365 shows unrecognized sign-in locations, such as a different state on your Android phone, and how to verify and secure your account.
Read more ›How to Retrieve Historical Email Security Data in Microsoft 365 Defender
Learn how to access historical email security data, including spam and malware trends, using Microsoft 365 Defender reports when Get-MessageTrace is limited.
Read more ›Can You Delete a Hacked Microsoft Account Before 30 Days?
Learn if you can bypass the 30-day waiting period to delete a hacked Microsoft account, and discover the essential steps to secure your compromised account immediately.
Read more ›Microsoft Defender Portal Submission Limits Explained
Learn about the submission limits for suspected spam, phishing messages, and attachments in the Microsoft 365 Defender portal and how to check your tenant quota.
Read more ›Is Automated Microsoft Login with OAuth Allowed? Security Guide
Learn about the security and compliance risks of automating Microsoft sign-ins with OAuth. Discover supported authentication flows and how to avoid privacy violations.
Read more ›How to Apply Microsoft Purview Auto-Labeling to S/MIME Email
Learn how to automatically apply Microsoft Purview sensitivity labels to incoming S/MIME encrypted emails to prevent forwarding and enhance enterprise data protection.
Read more ›How to Secure Microsoft Access Trust Center Settings
Learn how to secure Microsoft Access databases by properly configuring Trust Center settings and setting up narrowly scoped trusted locations.
Read more ›How to Apply DLP and Block Microsoft Teams File Uploads
Learn how to block file uploads in Microsoft Teams using Microsoft Purview Data Loss Prevention (DLP), Microsoft Intune, and Entra Conditional Access policies.
Read more ›How to Resolve a Microsoft Form Tagged as Phishing
Learn why your Microsoft Form is flagged as phishing and discover the steps to resolve this security policy error, review content, and restore your form.
Read more ›How to Manage Sensitive Data Restrictions in Outlook Email
Learn how Microsoft 365 administrators can configure, restrict, or disable Data Loss Prevention (DLP) policies for sensitive data in Outlook using Microsoft Purview.
Read more ›What to Do When Someone Uses Your Gmail for an Unrecognized Microsoft Account
Discover what to do if an unrecognized Microsoft account is using your Gmail address. Learn how to secure your email and handle password notifications securely.
Read more ›Try what you just learned
Download WPS Office free and open Word, Excel, PowerPoint, and PDF files in one lightweight app.