Trend Micro Worry Free Business - very slow opening of apps

We recently switched from Webroot to Trend Micro Worry Free (I now believe this was a mistake).  Almost immediately I started getting reports of "computer slowness" and started noticing this myself.  Primarily I had issues with Onedrive having issues synchronizing, opening Chrome and Edge (chromium) very slow, clicking links in emails (again opening browsers) slow, logging into Windows after a reboot long delay, slow loading of additional tabs / webpages, and other areas.

This appears to be a well known issue when using Trend Micro with "Unauthorized Change Prevention Service".  Watching the task manager when doing many of the tasks and I could see this service jump to the top.
Unfortunately, many of the TM options are dependent on this service, but at the end of the day I'm a firm believer that machines need to be speedy, so I disabled the service.  Note: I also disabled the Behavior Monitoring as this is dependent on the service.

If you're reading this while "thinking" of moving to Trend Micro I would advice you to take a test drive first.  I've found several issues which support is working through, but it's been a bumpy road.

1. Extreme slowdown when scheduled scans run (as opposed to what we're used to seeing with Webroot).
2. Unauthorized Change Prevention Service slowdown.
3. Issue with builds prior to 6.7.1319 being unable to restore to domain OU's.
4. Issue with many of our installs prior to 6.7.1319 being unable to update to latest build automatically - support still looking into issue.

Dot net 3.5 install error

I've had lots of issues in the past with being unable to install Dot Net 3.5 on Windows 10.  Typically, I can easily load the Win10 ISO, mount it, and use DISM with the sources switch.  Today I started encountering 2 laptops running Windows 10 that I continued to have issues and errors.

ISO mounted and received "the source files can't be found".  This was with the latest Win10 Iso download.

Checked WSUS and feature on demand is checked.

Easy fix is to bypass WSUS temporarily...
HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
UseWUServer set to 0
Reboot
Install Dot Net 3.5
Set the reg key back to 1
reboot

Windows Server 2016 RDSH - Start Menu stops working

On our farm of Windows Server 2016 RDSH (Remote Desktop Session Host) I've had seemingly random issues with the start menu stopping working.  This likely correlates with a Windows update being applied, but it's hard to tell as you do not always know immediately that it's stopped working (users complain days later or never complain and you notice when doing other maintenance, etc).

Searching the internet you find a number of solutions, but the most crazy (in my opinion) solution I found was the one that actually worked! 

In this post user MrManual says to delete and recreate a registry key dealing with the Firewall.  One, like me, would think this crazy and continue on trying all the other solutions only to have the issue remain (or return shortly).

Finally, figuring it's best to try a crazy solution than rebuild the server I open powershell and give it a go:

Remove-Item "HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\Configurable\System" New-Item "HKLM:\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\Configurable\System"

Click start menu and GASP it opens!

Note: other ideas on the thread do work, but seemingly only temporary.  I still suspect this to have something to do with the crappy UPD's.
On the note of UPD's one might ask "if you hate UPD's so much why not switch to fxlogic?  I mean, it is free afterall..."
https://blogs.microsoft.com/blog/2018/11/19/microsoft-acquires-fslogix-to-enhance-the-office-365-virtualization-experience/

https://www.brianmadden.com/opinion/Microsoft-FSLogix-free-to-all-customers

Dell Latitude 7480 / 7490 loud fan issue

We have a lot of Dell Latitude 7480 / 7490 laptops deployed.  When I first got them in we had lots of issues and complaints about the loud fan speed.  Under load this is understandable, but many times this would be with no load.   This is a common issue early on for these models as one can see from the numerous posts online:

https://www.dell.com/community/Latitude/fan-noise-and-heat-Dell-Latitude-7490/td-p/7439643

https://www.dell.com/community/Latitude/Dell-7480-and-Dell-5480-fan-noise-and-heating-issue-on-more-than/td-p/6072570

https://www.dell.com/community/Latitude/Latitude-7490-Overheating/td-p/6073431


In the past when I would get one of these laptops it was a matter of ensuring the BIOS was up to date and the issue would be gone.  Lately, my own laptop (7490) started having high pitch fast fan noise.  Of course I remembered right away that I had recently updated the BIOS to 1.13.1.
I quickly decided to do a BIOS downgrade to 1.11.0 to see if that would help.

No more loud fan noise at this point... Having issues with your fan always running top speed? Try an older BIOS version and call Dell rep to complain.

UPDATE:

I recently allowed a BIOS update to install and the issue came back on a Latitude 7490.

I then installed the Dell Power Manager application and found a section called "Thermal Management".  Under this section you can choose "Quiet", this instantly made the computer more bearable.