If you can still access TIC from my phone and old laptop, then I suspect this issue is related to the local computer.
>>> Please make sure you disable VPN (if any)
>>> Please check the few things below to make sure you disable the Windows proxy & firewall.
Please follow these steps to disable Proxy on Windows 10:
- Press Windows key + I to open Windows settings
- Go to Network & Internet > select Proxy
- Toggle the option "Automatically detect settings" to ON.
- Toggle the option "Use a proxy server" to OFF.
Please follow these steps to disable Windows 10 firewall
- Press ‘Windows + W’.
- Type ‘Windows firewall’ and press Enter.
- Select ‘Turn Windows Firewall on or off’ and select ‘Turn off Windows firewall’ for both ‘public network location settings’ and ‘Private network location settings'.
>>> Try different internet connections such as mobile hostpost.
Here's how you can set up an alternative internet connection with a mobile hotspot.
Here's an article to set-up mobile hotspot on an IOS device:
https://support.apple.com/en-us/HT204023
Here's an article to set-up mobile hotspot on an Android device:
https://www.androidauthority.com/mobile-hotspot...
>>> If the problem still persists then create a new fresh environment for MS Team (as a test). You can always go back to the previous Windows account profile when MS Team goes back to normal again.
- Create a new Windows account:
https://support.microsoft.com/en-us/help/402692...
- You can access MS Team online https://teams.microsoft.com or install MS Team in a new windows account. https://www.microsoft.com/en-us/microsoft-365/m...
DISCLAIMER:
There's a link above from the non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Kind Regards