On Friday, September 5, 2014, at 7:23 AM UTC, engineers received reports of an issue in which some customers were unable to open hyperlinks in Outlook Web App (OWA). Investigation determined that a coding issue prevented URLs from loading correctly within OWA. Engineers developed and deployed a fix to remediate end-user impact.
The issue was successfully fixed on Wednesday, September 10, 2014, at 2:00 PM UTC.