We created Teams in Microsoft Teams and add Planner inside Teams.
We found the error task.offce.com refused to connect as below when tried to launch Planner in Teams desktop and Teams web BUT when tried to launch Planner on Planner web, it's working fine.
We tried to click reload the tab, sometimes it can go to sign in page and can access to but sometimes it shows the same error and cannot go to sign in page.
I am not sure how to fix this problem ? Does Planner fully support to Teams ?
Remark : This happens to all Teams member. Teams desktop version is 1.3.00.12058 (64-bit).