Hi Vitek,
Thank you for your message in this forum.
According to your description, I have tested it with my Planner and I cannot reproduce the same situation as yours. As steps shown below:
I went to Office 365 Portal > then I clicked Planner web app > after two or three minutes, the Planner web app was opened.
Given this situation, we’d give you the suggestions below and hope that will help you:
- You mentioned “on different network connections”,
you can use your phone’s connection by opening a hotspot to check if the same problem will occur. This will
help you troubleshoot if it is caused by firewall or proxies.
- After opening this page, please wait a few minutes to check if the same problem will occur.
- You mentioned “When loging in and after I input my logins”, we’d suggest you go to
Office 365 Portal> then click Planner web app to check if the same problem will occur.
- Please change another browser to check if the same problem will occur.
If the problem persists, to help you better, I want to confirm the
information below with you:
- Do all the other colleagues have the same problem?
- You mentioned “When loging in and after I input my logins”, may I know if you signed in via entering the link of Planner web app?
Best Regards,
Sukie