Hi @Khaled Reslan
Can you check the below things:
- Check the "Boot Diagnostics" status.
- Error message when trying to RDP - "Internal Error" or "Three liner error"
- Check if you are able to access the VM from an another Azure VM running in same Vnet/Subnet.
- Please check if there is an NSG associated and it has an Inbound rule with allow on RDP port 3389 with a lesser priority (Example: 100).
- All the Azure Standard public IP's must needs an NSG - just incase if you remove the NSG, it will effect the RDP.
- Open Azure portal --> Open the VM --> Select "Connection Troubleshooting" from the list and change the VM destination service and port to RDP/3389 and run the test.
P.S: I am hoping no one has made any changes within the VM that can effect the RDP access, such as enabling firewall, Group Policy changes, changing the VM IP internally..etc.
Please feel free to let me know if you have any further queries.