SSH timeout for Azure Linux VM
This is an old question, but we often come across this and want to add some solutions.
Check if Port 22 is Enabled/Allow on "default-allow-ssh" under "Inbound Port Rules". (Path: Dashboard > Select your VM > Networking (under Settings section)
Logout of the Azure portal, clear browser cache and re-login
If your VM is hosted in Southeast Asia, then you'll be affected by the issues they're currently having.
VIRTUAL MACHINES customers will be unable to connect to their resources.