Microsoft 365
Microsoft fixes outage affecting MFA setup, MySignIn service
Microsoft has addressed an ongoing incident preventing customers from setting up multi-factor authentication (MFA) or accessing the My Sign-Ins platform. “We’re investigating an issue where some users may be unable to setup MFA or access the http://mysignins.microsoft.com website,” the company’s Microsoft 365 Status account shared on Twitter earlier today. According to additional information shared in the admin center under MO1329260, […]
Microsoft Self-Service Password Reset abused in Azure data theft attacks
A threat actor targeting Microsoft 365 and Azure production environments is stealing data in attacks that abuse legitimate applications and administration features. Microsoft tracks the actor as Storm-2949 and says that the purpose of the attacks is “to exfiltrate as much sensitive data from a target organization’s high-value assets as possible.” Storm-2949 used social engineering […]
Tycoon2FA hijacks Microsoft 365 accounts via device-code phishing
The Tycoon2FA phishing kit now supports device-code phishing attacks and abuses Trustifi click-tracking URLs to hijack Microsoft 365 accounts. Despite an international law enforcement operation disrupting the Tycoon2FA phishing platform in March, the malicious operation was rebuilt on new infrastructure and quickly returned to regular activity levels. Earlier this month, Abnormal Security confirmed that Tycoon2FA had rebounded to normal operations and even […]
Microsoft fixes Classic Outlook bug causing email delivery issues
Microsoft has resolved a known issue that was preventing some Classic Outlook users from sending emails via Outlook.com. As the company explained when it acknowledged the issue last week, affected users were being warned that some of their messages hadn’t reached intended recipients. Microsoft said that those experiencing this issue would encounter it more often when […]
Microsoft removes Support and Recovery Assistant from Windows
Microsoft has deprecated and removed the Support and Recovery Assistant (SaRA) command-line utility from all in-support versions of Windows updates starting March 10. SaRA is a free scriptable tool that helps troubleshoot and resolve common issues with Office, Microsoft 365, Outlook, and Windows by running a series of automated diagnostic tests on Windows 7, Windows […]
Microsoft links Classic Outlook issue to email delivery problems
Microsoft is investigating a known issue that prevents some Classic Outlook users from sending emails via Outlook.com. Affected users are being warned that their message hasn’t reached some intended recipients, and they will encounter this problem more often when the Outlook.com account they use to send email is an Outlook profile linked to another Exchange […]
Microsoft fixes Outlook Classic crashes caused by Teams Meeting add-in
Microsoft has resolved a known issue that rendered the classic Outlook email client unusable for users who enabled the Microsoft Teams Meeting Add-in. The bug was first reported on March 12, when affected Microsoft 365 customers began experiencing Outlook crashes and prompts to start it in safe mode. Microsoft acknowledged the issue nearly a week later in […]
Microsoft fixes bug causing Classic Outlook sync issues with Gmail
Microsoft has fixed a known issue causing Gmail and Yahoo email synchronization problems for classic Outlook users. As the company explained earlier this month, the bug triggers 0x800CCC0F and 0x80070057 error codes when synchronizing Gmail and Yahoo accounts. Microsoft said that this type of email account stopped syncing as of February 26, 2026, and that, in […]
New KB5085516 emergency update fixes Microsoft account sign-in
Microsoft has released an emergency update to address a major issue that breaks sign-ins with Microsoft accounts across multiple Microsoft apps, including Teams and OneDrive. This issue appears after installing the KB5079473 cumulative update that Microsoft released as part of this month’s Patch Tuesday, and it warns users that the affected devices are not connected to the […]
Microsoft: March Windows updates break Teams, OneDrive sign-ins
Microsoft says the March Windows 11 update breaks sign-ins with Microsoft accounts across multiple Microsoft apps, including Teams and OneDrive. These sign-in issues appear after installing the KB5079473 cumulative update Microsoft released last week as part of this month’s Patch Tuesday, and, according to a Windows release health dashboard update published on Wednesday, will trigger warnings that […]