Exchange Online
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 […]
Microsoft: Exchange Online bug mistakenly quarantines user emails
Microsoft is investigating an Exchange Online bug causing anti-spam systems to mistakenly quarantine some users’ emails. According to a new incident report added to the Microsoft 365 Admin Center, the email issues started almost five hours ago, at 10:11 UTC. While the company has yet to share what regions are impacted, this Exchange Online incident has been tagged as a critical […]
Microsoft Exchange Online outage affects Outlook web users
Microsoft is investigating an ongoing outage preventing Outlook on the web users from accessing their Exchange Online mailboxes. According to thousands of user reports on DownDetector, the issue started impacting Microsoft’s services more than two hours ago and is affecting customers attempting to log into their accounts, accessing the website, and triggering server connection problems. “We’re […]
Week-long Exchange Online outage causes email failures, delays
Microsoft says it partially mitigated a week-long Exchange Online outage causing delays or failures when sending or receiving email messages. While the company didn’t publicly share information on this incident, it tagged it as a critical service issue tracked under EX1027675 on the Microsoft 365 Admin Center. Microsoft has yet to share more information on what regions […]
Microsoft links recent Microsoft 365 outage to buggy update
Microsoft says a coding issue is behind a now-resolved Microsoft 365 outage over the weekend that affected Outlook and Exchange Online authentication. According to an incident report published in the Microsoft 365 admin center on Saturday at 09:29 PM UTC, the incident also triggered Teams and Power Platform degraded functionality and caused Purview access issues and errors. […]