I am pretty sure many Outlook users around the world will miss important deadlines. It makes items such as tasks and emails with a due date disappear.

Outlook search depends on Spotlight which indexes Outlook items.Įveryone running High Sierra is affected by this serious Outlook bug. In the end it turned out that they were testing with an outdated macOS version even though it was clear right from beginning that the cause of the issue is an incompatibility between Outlook and macOS. It took me more than a month to persuade them with almost daily conversations. Microsoft support now confirmed that it is an Outlook bug.