Uninstalling Meraki Systems Manager Agent with CMD

Uninstalling Meraki Systems Manager Agent with command prompt is very straight forward. From a remote command prompt enter the following command;

msiexec.exe /qn /x {5AED9348-0440-4180-9A5A-8F082684B011}

The command above will Uninstall Meraki Systems Manager using the same method as ‘Add/Remove Programs’ on the local computer.

The ‘/qn‘ parameter specifies a Silent Uninstall and the ‘/x’ parameter specifies to Uninstall. The Product ID is within the curly brackets.

As a bonus, you can use System Manager’s Remote Command feature to uninstall itself! Just run the command above, wait a few minutes and the client will show offline. Once offline you can remove it from your Meraki Dashboard.


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How to fix ACPI.sys High CPU Usage on HP Laptop

The background

When I upgraded my laptop at work to a HP ProBook 440 G5 I faced an annoying issue with the ‘System’ process consuming 15-25% CPU usage constantly. This led to the CPU generating more heat and subsequently causing the fan RPM to increase.

If you search Google for ‘Constant CPU Usage’ you will find numerous ways to identify the culprit process alongside suggestions on how to resolve the issue. I used an application named Process Explorer to identify the culprit.

In my instance, Process Explorer had identified that the ‘ACPI.sys’ thread within ‘System’ was causing the CPU issue. I tried numerous fixes suggested by others such as; changing and restoring power plans and messing around with registry keys which didn’t work.

The fix (at least for me)

HP devices typically come bundled with a lot of bloatware out of the box. The first thing I do is uninstall the bloat and keep only the software that is required to still be able to use all of the hardware such as drivers etc.

I mistakenly left the ‘Intel Rapid Storage Technology’ software installed which, in a nutshell, is designed to increase your hard drive performance based on frequently accessed files being cached.

When I ran the Intel Rapid Storage Technology application I noticed something strange; no hard drives were listed. The penny had dropped, Intel Rapid Storage Technology only detects HDD and SSD through SATA. My new laptop uses an M.2 SSD, therefore the software was redundant. I uninstalled Intel Rapid Storage Technology and rebooted.

Upon rebooting I immediately noticed that the ‘System’ process was no longer consuming CPU usage constantly. It fixed the issue!

The only thing I can think of is that Intel Rapid Storage Technology was looking for a device that didn’t exist and was stuck in a resourceful loop indefinately.

Let me know in the comments below if this helped you.


Resolving Sophos Enterprise Console Error 00000049

Sophos Endpoint LogoInstalling or re-installing Sophos Antivirus on endpoints with error code 0x00000049.

By following this guide, I cannot be held accountable for any damage or loss caused. Do so at your own risk.

Please check Add or Remove Programs or Programs and Features to make sure all previous antivirus software is uninstalled. If you are re-installing a misconfigured or misbehaving installation of Sophos Antivirus then leave it installed as it will be replaced.

1. Protect the endpoint using the “Protect Computers” wizard.

2. Identify the error which caused the installation to fail using the “View Computer Details” option from the right click menu.

We are particularly interested in resolving the error below, however I also have some troubleshooting tips at the end of this guide if you still encounter issues;

00000049 Cancelled Sophos installation and removal of third-party security software. The software being removed may include a firewall or other component that is not being replaced. Make sure the package you are installing provides equivalent protection to the package being removed.
Continue reading Resolving Sophos Enterprise Console Error 00000049


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