Known Issue
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 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 […]
New Windows 11 emergency update fixes preview update install issues
Microsoft released an out-of-band update to fix the March 2026 non-security preview update, which was pulled over the weekend due to installation issues. The optional cumulative update (KB5079391) was released on Thursday for Windows 11 24H2 and 25H2 systems, with 29 changes, including Smart App Control and Display improvements. However, right after it started rolling out, users […]
Microsoft pulls KB5079391 Windows update over install issues
Microsoft has pulled a buggy Windows 11 non-security preview update to investigate a known issue that triggers 0x80073712 errors during installation. KB5079391, the problematic optional cumulative update, started rolling out on Thursday to Windows 11 24H2 and 25H2 systems with 29 changes, including Smart App Control and Display improvements. This preview update also improved Windows Hello Fingerprint […]
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 […]
Microsoft Exchange Online service change causes email access issues
Microsoft is working to address an ongoing service issue that has intermittently prevented some users from accessing their cloud-based Exchange Online mailboxes via Outlook mobile and Mac desktop clients since Thursday. After investigating the incident (tracked under EX1256020), Microsoft found that the root cause was a newly introduced virtual account. On Saturday, began working to revert […]
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 […]
Microsoft shares fix for Windows C: drive access issues on Samsung PCs
Microsoft has shared guidance to fix C:\ drive access issues and app failures on some Samsung laptops running Windows 11, versions 25H2 and 24H2. This comes after a joint investigation with Samsung that pinned these issues on the Samsung Galaxy Connect app, used for screen mirroring, file sharing, and data transfer between Samsung Galaxy devices and […]
New Windows 11 hotpatch fixes Bluetooth device visibility issue
Microsoft has released an emergency update to fix a Bluetooth device visibility issue on hotpatch-enabled Windows 11 Enterprise devices. The Bluetooth devices will not appear in Windows Settings or Quick Settings, even though they’re functioning correctly and connected to affected systems. This bug could also prevent some users from adding new Bluetooth devices because available […]
Microsoft: Enabling Teams Meeting add-in breaks Outlook Classic
Microsoft is working to address a known issue that renders the classic Outlook email client unusable for users who have enabled the Microsoft Teams Meeting Add-in. “Some users may be unable to use Microsoft Outlook Classic while the Microsoft Teams Meeting Add-in is enabled,” Microsoft said in an admin center update under EX1254044. While it […]