We've detected that either your network is showing up degraded performance (sometimes it may happen due to packet drop at ...

We've detected that either your network is showing up degraded performance (sometimes it may happen due to packet drop at intermediary routers) or the TCP port {0} at which Office 365 services are running is blocked or Office 365 IP addresses are blocked somewhere between this device and the Office 365 server that your device is trying to connect to. You should check intermediary routers performance and firewall's outbound connection settings on this device or intermediary routers, please disable the corresponding rules if any.