You cannot directly run gpupdate on 100 machines via the command line. Instead, use :
gpupdate /target:computer
Ensure network traffic on TCP port 135 is permitted to allow GPO updates. gpupdate command
: Refreshes only the specified settings (either for the machine itself or the specific logged-in user). Microsoft Learn Common Switches & Options You can add parameters to control how the update behaves:
: Reapplies all policy settings, regardless of whether they have changed since the last update. You cannot directly run gpupdate on 100 machines
Beyond the basic force, several switches help you handle specific scenarios: What's the PowerShell equivalent of GPUpdate? - PDQ
You can combine switches. This is a nuclear option: force reapply all policies, then reboot if required. Microsoft Learn Common Switches & Options You can
Mastery of the Command: A SysAdmin's Essential Guide In the world of Active Directory, patience is a luxury most sysadmins don't have. Waiting for the default 90-minute refresh cycle