RDP Black Screen
RDP Black Screen KB ID 0001840 Problem This problem has jumped up through various iterations of Windows operating systems. You attempt to RDP to a machine; it connects but you simply get a black screen. RDP Black Screen Solution Over the years various ‘hotfixes’ were known to cause this, but before proceeding make sure both the machine you are connecting FROM and the machine you are connected TO are fully patched and...
Disabling IPv6
Disabling IPv6 KB ID 0001832 Problem Stop! Why do you want to disable IPv6? I see this regularly in forums, with other unusual statements like “If you’re not using it disabling it” or “It’s just another attack vector, disable it.” Well unless you’re running Windows XP and Server 2012 you’re using IPv6. If something does not work and disabling IPv6 fixes it, then it’s usually...
Windows Remote VPN no DNS
VPN no DNS KB ID 0001402 Problem I’ve been setting up a VPN solution on the test bench as I’m looking at Always On VPN. When I noticed that I had a problem with my remote VPN connections on Windows. They would connect fine but I could not resolve any FQDNs for my domain? VPN no DNS Solution By default, all (Windows) VPN connections are ‘Force Tunnel’ (this means they have the option ‘Use default gateway...
Manually Update Windows Trusted Root Certificates
Manually Update Windows Trusted Root Certificates KB ID 0001831 Problem These days your trusted root certificates are simply updated with Windows Update, but what if your servers have no internet access? In this example I will manually update the root certs by downloading them on a machine WITH internet access then importing on another machine that has not. Bear in mind: If none of your machines have internet access they cannot check...
Windows: Migrate DHCP HA
Migrate DHCP HA KB ID 0001826 Problem I got an email last week. “Hi thanks for your video. I have two win 2012 DC DHCP on a failover/load balance config and want to migrate to new Win 2022 VMs. What’s the exact procedure? If it’s a single VM it’s easy but I’m not sure about if it’s on a failover setup.” Well migrating the domain controller element I’ve covered before. Migrate From Server...
Deny RDS
Deny RDS KB ID 0001825 Problem Way back when I started doing tech (in the days of Novell 4 and NT4), my mantra was, if you must deny something then you’ve done something wrong. Now I work for a UK based MSP that offers SPLA licensing to clients. Unlike typical RDS licensing, With SPLA this requires every ‘capable’ AD user that ‘can’ RDP onto a server (regardless of it’s a Session Host RDS Server or...
Auto Update ADMX Files
Auto Update ADMX KB ID 0001824 Problem It’s been a long time since I ran through setting up a central policy definitiosn store. In that time, you’ve probably had to copy ADMX (and ADML) files into your central store manually. Microsoft updates typically DO download updates but puts them (usually) in C:\Windows\PolicyDefinitions, There’s probably a sensible reason for that. When someone cleverer than I has scripted...
Microsoft Edge Multiple Statup Pages (via GPO)
Microsoft Edge KB ID 0001818 Problem Controlling Microsoft Edge with Group Policy is pretty straight forward, you just need to ensure the msedge.admx and msedgeupdates.admx files have been added to your policy definitions store in the right folders. If you have no idea what I’m talking about, see the following article. Microsoft Edge on Server 2019/2016 (and Citrix) Then you can deploy group policies to your...
NameSpace ‘Microsoft.Policies.WindowsStore’ Error
Microsoft.Policies.WindowsStore KB ID 0001817 Problem While working in the Group Policy Management tool, upon expanding administrative templates I got this error. Namespace ‘Microsoft.Policies.WindowsStore’ is already defined as the target namespace for another file in the store. Solution: Microsoft.Policies.WindowsStore Error This is because in your policy definitions there are two (four actually) files that are pointing...
Disable LLMNR and NetBIOS (via GPO)
Disable LLMNR and NetBIOS KB ID 0001816 Problem LLMNR is a protocol that’s used both in IPv4 and IPv6 networks to provide name resolution (in the absense of DNS), the problem with it is that it is wide open to exploitation and can be used to perform a MITM attack on your network. NetBIOS is much older and asscociated with IPv4 networks only. Really old Microsoft OSs used to rely on it heavily, but these days its pretty much...