microsoft
Microsoft 365 outage affects Teams, SharePoint and other services
Microsoft is impacted by a massive outage affecting Teams and Microsoft 365 services, primarily affecting users in North America. At 11:11 AM ET on July 23, Downdetector recorded 2,403 reports, sharply above its normal baseline of 29. SharePoint accounted for 78% of the complaints, followed by Excel at 11% and the Microsoft 365 Admin Center at 6% […]
Microsoft working to fix Exchange Online mailbox quarantine issue
Microsoft is working to resolve an ongoing Exchange Online issue that has been mistakenly quarantining customers’ mailboxes since Sunday. The incident, tracked by Microsoft under EX1436407, began on July 19 and remained unresolved as of the most recent update Wednesday evening. During this time, affected Exchange Online users have been experiencing issues receiving and sending emails […]
Microsoft to stop Exchange 2016 / 2019 security updates in October
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. This comes after a 6-month extension announced in April 2026 to the original ESU program, which began in October after Exchange Server 2016 and 2019 reached the end of support. Exchange 2016 reached mainstream support in October […]
Microsoft shares manual fix for WSUS sync delays and timeouts
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. This known WSUS sync issue affects both client (Windows 10, version 1607 and later) and server (Windows Server 2012 and later) platforms. On impacted WSUS servers, […]
Windows LegacyHive zero-day flaw gets free, unofficial patches
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. The vulnerability (dubbed LegacyHive and without a CVE ID for easy tracking) was found by a security researcher using the “Nightmare Eclipse” handle in the Windows User Profile Service. Nightmare Eclipse disclosed it the day […]
Microsoft confirms Windows Server Update Services sync delays
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. WSUS was introduced almost twenty years ago to help IT administrators schedule updates for Microsoft products on enterprise networks from a single local update server, rather than updating each endpoint […]
Windows KB5121767 OOB update fixes shutdowns on some Dell PCs
Microsoft has released emergency updates to fix a known issue causing some Dell PCs to experience performance issues or shut down after installing the July 2026 Windows 11 security updates. As detailed when Microsoft acknowledged the issue on Tuesday, it affects only Dell systems that have installed the KB5101650 cumulative update on Windows 11 25H2 and 24H2 devices. […]
Microsoft warns of surge in ACR Stealer attacks on customers
Microsoft has observed a surge in attacks using the ACR Stealer malware to steal browser-stored passwords, authentication tokens, and sensitive documents from its enterprise customers. Between late April and mid-June, the threat actor used the ClickFix social-engineering method, WebDAV servers, and the MSHTA (Microsoft HTML Application Host) utility to deliver the info-stealing payload. ACR Stealer […]
Windows 11 24H2 Home and Pro reach end of support in 90 days
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. However, as the company explains on its support website, Enterprise and Education editions will remain under mainstream support until October 12, 2027. “On October 13, 2026, Windows 11, version […]
CISA warns admins to patch actively exploited SharePoint flaws
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. These security flaws (tracked as CVE-2026-32201, CVE-2026-45659, and c) affect all supported self-hosted SharePoint Server versions, including SharePoint Server Subscription Edition (the latest on-premises version, which uses a “continuous update” model). […]