Microsoft has released Windows 10 KB5120249 Extended Security Updates for versions 22H2 and 21H2 to fix security vulnerabilities and bugs. [...]

Today is Microsoft's August 2026 Patch Tuesday, and with it comes security updates for a massive 400 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. [...]

Microsoft has released Windows 11 KB5121003 and KB5120240 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. [...]

CISA confirmed today that ransomware gangs have begun abusing a high-severity Microsoft SharePoint remote code execution vulnerability, which has been flagged as actively exploited since early July. [...]

​​Microsoft has released the KB5101684 preview cumulative update for Windows 11 24H2 and 25H2, which 42 bug fixes and additional feature improvements for the operating system. [...]

Microsoft says a bug in its automated network maintenance request system caused Thursday's massive outage by mistakenly removing IP routes from more devices than intended, disrupting Azure and Microsoft 365 services. [...]

Microsoft is impacted by a massive outage affecting Teams and Microsoft 365 services, primarily affecting users in North America. [...]

Microsoft is working to resolve an ongoing Exchange Online issue that has been mistakenly quarantining customers' mailboxes since Sunday. [...]

Microsoft has reminded customers that it will stop shipping security updates for Exchange 2016 and 2019 through the Extended Security Update (ESU) program in October. [...]

Microsoft has shared manual mitigations to help IT administrators fix Windows Server Update Services (WSUS) servers affected by a known issue that causes Windows Update scans to fail or time out. [...]

Free unofficial patches are available for a recently disclosed Windows zero-day flaw that allows attackers to escalate privileges on up-to-date Windows systems. [...]

Microsoft is working to fix a known issue affecting Windows Server Update Services (WSUS) servers, which has caused synchronization problems for more than a week. [...]

Microsoft has released emergency updates to fix a known issue causing some Dell PCs to shut down after installing the July 2026 Windows 11 security updates. [...]

A security researcher using the "Nightmare Eclipse" handle has released a Windows zero-day exploit dubbed LegacyHive that allows attackers to escalate privileges on up-to-date Windows systems. [...]

Microsoft announced that Windows Server 2022 will reach the mainstream end date in October 2026, but will switch to extended support and continue receiving security updates for five more years. [...]

Microsoft announced on Wednesday that systems running Windows 10 Enterprise LTSB 2016 and Home and Pro editions of Windows 11 24H2 will stop receiving updates in three months. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned Tuesday that attackers are actively exploiting three vulnerabilities to hack Internet-exposed on-premises SharePoint Server instances. [...]

Microsoft is blocking this month's Windows 11 security updates on some Dell devices because they are causing shutdowns and performance issues. [...]

Microsoft has released the Windows 10 KB5099539 extended security update, which includes this month's record-breaking July 2026 Patch Tuesday fixes, along with additional security improvements. [...]

Today is Microsoft's July 2026 Patch Tuesday, and with it comes security updates for a record-breaking 570 flaws, including two zero-day vulnerabilities exploited in attacks and one publicly disclosed. [...]