Hi,
From the description, the tasks you create in Outlook desktop client do not show up in your Outlook but do show up when logging into OWA, am i correct?
Are you using an Outlook.com account? If so, how did you set up the Outlook.com account in your Outlook desktop client? Did you add it via Auto Account Setup wizard as an Exchange account?
What if we try creating a task in OWA? Can you then see the task in Outlook client?
Besides, please also try resetting the task view in case your tasks were hidden by filters. To do this, go to Tasks, click
View tab, click Reset View button.
Hope this helps.
Regards,
Steve Fan
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