Exchange Online
New bug in classic Outlook can only be fixed via Microsoft support
Microsoft is investigating a known issue that causes the classic Outlook email client to crash upon launch, which can only be resolved via Exchange Online support. According to a recently published support document, this impacts Microsoft 365 customers who use classic Outlook on Windows systems. While the company didn’t specify the root cause of this ongoing issue, […]
Microsoft fixes Exchange Online outage affecting users worldwide
Microsoft says that it has mitigated an Exchange Online outage affecting customers worldwide, which blocked their access to emails and calendars. “We’re investigating an issue affecting a portion of infrastructure in North America, where users may be unable to access their mailbox via any Exchange Online connection method,” the company said on Thursday morning. According to user reports on DownDetector, the […]
Microsoft: Anti-spam bug blocks links in Exchange Online, Teams
Microsoft is working to resolve a known issue that causes an anti-spam service to mistakenly block Exchange Online and Microsoft Teams users from opening URLs and quarantine some of their emails. In a service alert seen by GeekFeed, the company stated that the issue is caused by the anti-spam engine incorrectly tagging URLs contained within other URLs […]
Microsoft working on fix for ongoing Outlook email issues
Microsoft is working to resolve an Exchange Online issue causing email access problems for Outlook mobile users who use Hybrid Modern Authentication (HMA). HMA is a Microsoft Exchange Server feature that allows users to access on-premises mailboxes using authorization tokens from the cloud. Tracked under EX1137017 in the Microsoft 365 Admin Center, this known issue is caused by a recent […]
Microsoft: DNS issue blocks delivery of Exchange Online OTP codes
Microsoft is working to fix a DNS misconfiguration that is causing one-time passcode (OTP) message delivery failures in Exchange Online for some users. Recipients may receive a single-use access code via a separate email to open an encrypted message in Gmail, Yahoo, or other email clients without a Microsoft 365 subscription. This OTP message allows them to view […]
Microsoft Defender for Office 365 now blocks email bombing attacks
Microsoft says its Defender for Office 365 cloud-based email security suite will now automatically detect and block email bombing attacks. Defender for Office 365 (formerly known as Office 365 Advanced Threat Protection or Office 365 ATP) protects organizations operating in high-risk industries and dealing with sophisticated threat actors from malicious threats from email messages, links, […]
Microsoft fixes Exchange Online bug flagging Gmail emails as spam
Microsoft has resolved an issue with a machine learning model that mistakenly flagged emails from Gmail accounts as spam in Exchange Online. Tracked as EX1064599 in the Microsoft 365 admin center, the issue started impacting users on April 25 at 09:24 UTC, automatically moving emails erroneously tagged as malicious to the junk folder. “We’ve identified that our […]
Microsoft fixes Outlook on the web search issues, failures
Microsoft is working on fully mitigating issues causing Outlook on the web and SharePoint Online users to experience delays or failures when searching. Tracked under EX1063763 in the Microsoft 365 Admin Center, the issues are caused by infrastructure components responsible for processing users’ search requests that perform below acceptable performance thresholds. The company first acknowledged this Exchange […]
Microsoft fixes machine learning bug flagging Adobe emails as spam
Microsoft says it mitigated a known issue in one of its machine learning (ML) models that mistakenly flagged Adobe emails in Exchange Online as spam. As the company revealed in an advisory on the Microsoft 365 admin center tagged as EX1061430, users had issues accessing alerts for Adobe URLs starting April 22 at 09:24 UTC while […]
Microsoft investigates global Exchange Admin Center outage
Microsoft is investigating an ongoing outage that is blocking admins worldwide from accessing the Exchange Admin Center (EAC). The company tagged this ongoing issue as a critical service issue tracked under EX1051697 on the Microsoft 365 Admin Center, and it says that “at this time appears to be a global issue.” Since the outage started two hours […]