Unable to add firewall rule to local GPO using new-getfirewallrule

PowerShell Help
1
I'm trying to add firewall rule using New-NetFirewallRule cmdlet. By default the rule is added to local FW. As per this https://docs.microsoft.com/en-us/powershell/module/netsecurity/new-netfirewallrule?view=win10-ps to add the rule to local GPO, PolicyStore parameter needs to be set with either hostname or localhost parameter.

However when I try the command : New-NetFirewallRule -DisplayName “testing” -PolicyStore localhost , I get this error :

“New-NetFirewallRule : The network name cannot not found. At line:1 char:1 New-NetFirewallRule -DisplayName “testing” -PolicyStore localhost CategoryInfo : NotSpecified: (MSFT_NetFirewallRule:root/standardcimv2/MSFT_NetFirewallRule) [New-NetFir ewallRule], CimException FullyQualifiedErrorId : Windows System Error 67,New-NetFirewallRule”

 

Edit: Some times I get this error as well:

New-NetFirewallRule : Mutual Authentication failed. The server’s password is out of date
at the domain controller.
At line:1 char:1

  • New-NetFirewallRule -PolicyStore localhost
  • CategoryInfo : NotSpecified: (MSFT_NetFirewallRule:root/standardcimv2/MSF
    T_NetFirewallRule) [New-NetFirewallRule], CimException
  • FullyQualifiedErrorId : Windows System Error 1397,New-NetFirewallRule
2

Works for me. What is the OS and PowerShell version you have ?

3

OS : Win 10 Version 1809 , Powershell : 1.5, these are relatively new versions, the cmd should’ve worked.

4

Ok. One basic thing to check is whether you are running PowerShell with elevated permissions or not. PowerShell should be running with administrator privileges to do this operation.

5

It is running with admin privilege.