Microsoft testing fix for Outlook outage causing email delays

Microsoft announced that it is testing a remedial update aimed at resolving the widespread Outlook disruptions that have caused email delays and delivery failures for users of its Office 365 suite. The problems, first reported earlier this week, have affected both individual and enterprise accounts, prompting complaints from businesses that rely on timely communications. In a statement, the company said it has identified the root cause and is now conducting controlled testing of a fix before a broader rollout.

The testing phase involves a limited group of customers who will receive the patch over the next 24‑48 hours, after which Microsoft will monitor performance and confirm stability. The company indicated that once the fix proves effective, it will be deployed globally through its standard update channels, with an expected completion within the week. Users experiencing continued issues are advised to follow the company's troubleshooting guidance while the solution is being finalized.