Employee timestamp is updated but the email signatures are not updated.
How to change User Account Control (UAC) back to default in Windows
Here's how to make changes to the UAC setting.
Open the Control Panel by right-clicking the Start button and clicking Control Panel.
In the Control Panel, go to User Accounts and then click Change User Account Control settings. This will open up the User Account Control Settings window.
In the User Account Control Settings window, you'll see a slider with four options. The default setting is the second-highest option.