18 Apr, 2026

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 […]

2 mins read

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 […]

2 mins read

Microsoft still working to fix Exchange Online mailbox access issues

Microsoft is investigating and working to resolve Exchange Online mailbox access issues that have intermittently affected Outlook mobile and macOS users for weeks. When it first acknowledged this service issue (tracked under EX1256020) last week, Microsoft said the root cause was a newly introduced virtual account. While the company flagged it as resolved on April 1, […]

2 mins read

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 […]

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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 […]

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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 […]

1 min read

Microsoft Exchange Online outage blocks access to mailboxes

Microsoft is working to address an ongoing Exchange Online outage that is preventing customers from accessing their mailboxes and calendars. “We’re investigating reports of some users experiencing issues when accessing their Exchange Online mailbox via one or more connection methods,” Microsoft said when it acknowledged the issue at 06:42 AM UTC. As Microsoft explained in a Microsoft […]

2 mins read

Microsoft investigates classic Outlook sync and connection issues

​Microsoft is investigating several issues causing email synchronization and connection problems when using the classic Outlook desktop client. The first bug causes “Can’t connect to the server” errors when creating groups in classic Outlook when Exchange Web Services (EWS) is enabled for the tenant. According to Microsoft, this occurs because the AD Graph call for […]

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Microsoft says bug in classic Outlook hides the mouse pointer

Microsoft is investigating a known issue that causes the mouse pointer to disappear in the classic Outlook desktop email client for some users. This bug has been acknowledged almost two months after the first reports started surfacing online, with users saying that Outlook became unusable after the mouse pointer vanished while using the app. “My […]

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