An issue I’ve run into on Palo Alto Networks firewalls is that everything seems to work when importing a certificate (usually a PFX). Until you start using the certificate, then after a validation or a commit, there’s a warning that the certificate chain is not correctly formed. Warning: certificate chain not correctly formed in certificate…
Usually, when you want to control the Windows Update settings, you create a GPO to manage the settings or tweak some registry entries. Both methods alter the registry values in the registry key To reset any custom Windows Update settings, I nuke out that registry key or reverse the GPO or both, and restart the…
I recently encountered a strange issue with Omnissa Horizon (formerly VMware Horizon) that resulted in a black screen presenting to the VDI users when they logged in. When you search for this issue, you will find a lot of information about various solutions to the blank screen issue. However, none of them solved the problem…
The VMware vCenter root certificate is an essential part of vCenter. When you install vCenter, it also installs the VMCA (VMware Certificate Authority) in your vCenter. The VMCA is a barebones CA for vCenter that issues certificates to the various elements of vCenter as needed. You should install the VMCA root certificate on your system…
I recently discovered that I caused an unintended side effect on Windows 10 when deploying a default taskbar for all users. In my post Intune Deploy Default Taskbar I inadvertently introduced a bug to the Windows 10 Start Menu making it so users can’t customize anything. The bug is that users can pin programs to…
I needed to route an FQDN (Fully Qualified Domain Name) down an IPSEC VPN tunnel but couldn’t because it was an external address and the IP is dynamic so I wasn’t able to just make a static route to force it down the IPSEC VPN tunnel. To solve this I discovered something called policy based…
I recently ran into an issue where I had uninstalled Onyx on my switch and I was trying to reinstall it but couldn’t because I was getting an error. Below is an example of the error. partition exists – please uninstall firstEXT4-fs (sda3): couldn’t mount as ext3 due to feature incompatibilitiescp: write error: No space…
In this post I will detail how to resolve the Palo Alto commit error when trying to commit a predefined IP list. Below is an example of the error Validation Error:external-list -> Palo Alto Networks Tor exit IP Addresses -> type -> predefined-ip -> url ‘panw-torexit-ip-list’ is not a valid referenceexternal-list -> Palo Alto Networks…
I ran into an issue where some older Cisco Aironet APs (Access Points) stopped connecting to a Cisco WLC (Wireless LAN Controller). No config changes had been made and some of the Cisco Aironet APs would connect and some wouldn’t. All of them were the same model, the Cisco Aironet APs were able to ping…
Recently I’ve ran into an issue with Microsoft Teams where the user sees a blocking message that says “Teams needs an update”. The user needs to action it before they can use Microsoft Teams again. Typically the user can just click on Update Teams which will take them to a download page for Microsoft Teams,…
