Gpupdate not updating
Windows periodically refreshes group policy settings throughout the network.
On client computers, this is done by default every 90 minutes, with a randomized offset of plus or minus 30 minutes.
You can change the default values by modifying the settings in Administrative Templates.
You cannot schedule a specific time to apply a Group Policy Object (GPO) to a client computer.
While testing new policies this command is your friend, it gives you a chance to test the result on a client instantly, (as soon as policy editing is finished).
By opening an administrative command window, and running the following command..
Software installation and folder redirection settings in a GPO are processed only when a computer starts (computer-based policies) or when the user logs in (user-based policies), rather than at a particular time.
Personally I’ve never needed to mess around with these settings. Some will fail, they might not be turned on, or (like some below,) they might be linux machines.
11/02/17I’ve written hundreds of posts about doing things with group policies.
Every time I finish one, I write a couple of paragraphs on how long to wait, or how to force the policy etc.
Now you can change this interval with group policy; As you can see, you can change the interval up to 64,800 seconds (45 days).
If you set it to ‘0’ the policy updates every 7 seconds (NEVER DO THIS!