Disable Windows firewall from PowerShell

Set-NetFirewallProfile -Profile Domain,Public,Private -Enabled False

Set-NetFirewallProfile -Profile Domain,Public,Private -Enabled True

Fixing "Not Present" Network Adapters in Windows 2012 core mode

I had a situation with a customer who had 2x 10GbE NICs in a Dell PowerEdge R720 server. The Network Adapters as seen below show "Not Present" It didn't seem to matter if there was a cable present or not. 

We even tried disabling and re-enabling the adapter but this didn't help. A case was raised with Dell SST, first the NIC and the raiser was replaced. This did not fix it. We tried moving the Adpater to another slot and it worked, but to keep symmetry the customer wanted the adapter in this specific slot. Next Dell replaced the mainboard and CPU, this also did not fix the problem. We booted into a Linux liveCD and we could see that the NIC was functioning so this pointed to Windows.


The Deployment was using Windows 2012 R2 core mode so we could not use Windows Device Manager to see what was happening. I never seem to be able to get Device Manager working remotely. So I turned to DevManView which if free from NirSoft. What we noticed was that the card was listed twice. we tried disabling re-enabling the card but this didn't help. Fortunatly we can use DevManView to open the related Registry key. Because the nornal Administrator account doesn't have permission to remove device based reg keys, you can run RegEdit as the system account but using PsExec from Microsoft. We used DevManView to open the keys and delete them! Excercise caution here, know what you are doing with the registry and have backups, you have been warned!

The server was rebooted and the devices were re-detected and this corrected the problem!

www.nirsoft.net/utils/device_manager_view.html

psexec -i -d -s c:\windows\regedit.exe

How to list installed application in Windows 2012 core mode

You can use PowerShell to list all the installed applications on Windows 2012 core mode.

Get-WmiObject Win32_Product | ft -Auto

VSS fixup script

If Windows backup is failing due to VSS issues, you can try this script to re-register all the VSS DLLs. This should be a last resort after all other avenues have been investigated.

net stop "File Replication Service"
net stop "DHCP Server"
net stop "DFS Replication"
net stop "Background Intelligent Transfer Service"
net stop "System Event Notification Service"
net stop "Background Intelligent Transfer Service"
net stop "COM+ Event System"
net stop "Microsoft Software Shadow Copy Provider"
net stop "Volume Shadow Copy"

cd /d %windir%\system32

net stop vss
net stop swprv
regsvr32 /s ole32.dll
regsvr32 /s oleaut32.dll
regsvr32 /s vss_ps.dll
vssvc /register
regsvr32 /s /i swprv.dll
regsvr32 /s /i eventcls.dll
regsvr32 /s es.dll
regsvr32 /s stdprov.dll
regsvr32 /s vssui.dll
regsvr32 /s msxml.dll
regsvr32 /s msxml4.dll
regsvr32 /s msxml3.dll

net start "COM+ Event System"
net start "System Event Notification Service"
net start "Microsoft Software Shadow Copy Provider"
net start "Volume Shadow Copy"
net start "File Replication Service"
net start "DHCP Server"
net start "DFS Replication"
net start "Background Intelligent Transfer Service"

Finding volume GUIDs from powershell

This peice of PowerShell will find all the volume GUIDs, their name and free space.

Get-WmiObject -class Win32_Volume -computername localhost | where-object {$_.name -like "\\?\*"} | select-object label, name, @{ Label = "Capacity(GB)" ; Expression = { "{0:N2}" -f ($_.capacity/1024/1024/1024) } },@{ Label = "Freespace(GB)" ; Expression = { "{0:N2}" -f ($_.freespace/1024/1024/1024) } } | ft -auto

Changing a hosts display name case in SCVMM

If you want to change the displayed case of hosts in SCVMM to upper case below this the SQL query you need to execute on the SCVMM SQL database.


Stop the System Center Virtual Machine Manager and System Center Virtual Machine Manager Agent service on the SCVMM server.

Open SQL Studio manager, select the VirtualManagerDB and take a backup first! Then paste this code into a new query window and select execute.

SELECT [ComputerName], UPPER(LEFT([ComputerName], CHARINDEX('.', [ComputerName], 1) -1)) +
            RIGHT([ComputerName], LEN([ComputerName]) - CHARINDEX('.', [ComputerName], 1) + 1)
FROM [VirtualManagerDB].[dbo].[tbl_ADHC_Host]

UPDATE [VirtualManagerDB].[dbo].[tbl_ADHC_Host]
SET [ComputerName] = UPPER(LEFT([ComputerName], CHARINDEX('.', [ComputerName], 1) -1)) +
                               RIGHT([ComputerName], LEN([ComputerName]) - CHARINDEX('.', [ComputerName], 1) + 1)

Start the System Center Virtual Machine Manager and System Center Virtual Machine Manager Agent service on the SCVMM server.

Job done!

Using PowerShell Enter-PSSession when your computer isn't on the domain.

Quite often when i'm at a customers site I need to work on their servers. Each time I go to site I don't join my laptop to the customers domain. The problem with this is that when you use the Enter-PSSession command you get an error message about the fact that your computer is not joined to the domain that the server is.

This also presumes you have enabled PSRemoing on the destination host with this command:

Enable-PSRemoting -Force

Here is the work around; Enter the first command on you computer once only. This tells your computer to trust the identify of any remote computers. This should not be done on non technical users computers as the security implications are obvious.

Set-Item WSMAN:\Localhost\Client\TrustedHosts -Value * -Force

The command below will connect you to the computer of your choice, you will need change the IP address or substitute a computer name, you will also need to change the domain and username to an account that is active on the server.

Enter-PSSession -ComputerName 0.0.0.0 -Credential domain\username -Authentication negotiate