VM: RDP port is blocked by Windows Defender Firewall inbound rules

Question

Hi there,

I have used my VM for 3 years (Windows 2016 R) and I have been using RDP.

Today I saw a lot of IP addresses which are trying to log on my VM via RDP so I tried to block them by configuring Windows Defender Firewall inbound rules but I accidentally blocked everything, mine included.

I tried to connect my VM again but every attempts are failed. What I have tried:

a) cmd (ResetRDPCert SetRDPPort), just black screen forever

b) Reset password and configuration : after reset I can't still log on

c) Bastion : connection unstable

d) Change network rules on Portal : inbound/outbound rules

I can't lose anything in my VM because the server is live.

Can anyone please help me? I just need to log on again...

Answer 1

Hello SK

You could try to list and deactivate the rule using PowerShell:

#List enabled rules
Get-NetFirewallRule | Where-Object {$_.Enabled -eq "True"} | Sort-Object Displayname | Select-Object Displayname

#Disable firewall rule
Disable-NetFirewallRule -DisplayName <Displayname>

Answer 2

Hello,

I noticed that you are using a portal, are you using a VM from a 3rd party? Their support may help you change your FW rules in portal.

If you just changed FW rule in your PC, you could run command to reset your firewall "netsh advfirewall reset"

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