There are a number of shortcuts that Office 2010 (which I have here in my Windows 7 Virtual machine) as well as other versions.
Here is a frequently used list of keyboard shortcuts.
Office 2010 Shortcuts
Ctrl + C
Ctrl + X
Ctrl + F
Ctrl + G
Ctrl + K
Ctrl + N
Ctrl + O
Ctrl + V
End of support for Office 2010:
Microsoft will no longer provide technical support, bug fixes, or security fixes for Office 2010 vulnerabilities which may be
subsequently reported or discovered. This includes security updates
which can help protect your PC from harmful viruses, spyware, and
other malicious software.
You'll no longer receive ...
Office 2010 still receives security updates for a little while longer (I saw April 2021 updates).
Power Point can be susceptible to links in slides to dubious sites and locations.
So Yes, you should keep the Security Updates and not attempt to uninstall them.
You should make arrangements fairly soon to upgrade Office to a newer version with better security.
My situation is slightly different:
My Office 2010 version is 14.0
The warning banner isn't yellow but red
The support ended in March 2021 not October 2020
After editing the value for key MessageScenario to 0 it gets changed back to 6
After deleting the TargetedMessagingService node it gets restored
The solution which worked was to find TimeToNextcall.