Office 365 email

Unplanned; Complete


Affected services
  • Office365
At Risk Time
06:00 AM, 03-Jul-20 — 06:00 AM, 06-Jul-20
Users may see legitimate .docx email attachments mistakenly marked as malware and may be unable to open attachments. Only .docx file types are affected. Microsoft's investigation shows that a recent update inadvertently caused an .XML file present in Word documents to be marked as malware which is causing the issue. They are reverting the update and reprocessing the messages to ensure that all affected messages and future emails are resolved.

Technical Information

Technical Information

Work summary
Technical summary
Office 365 email
Servers / Hardware
Impact description
Change Reference
Additional comments

Request, Authorise and Publish

Requested by Willie Mitchell on 03-Jul-2020
Authorised by Applications
Publish to IS Website (Service Status and Alerts page): Yes
Published by Willie Mitchell

Additional Details

Risk classification
Risk assessment
Other people involved
Notes for future reference