Upgrade to 11.4.2528.23 caused most remote laptops to go offline

Upgrade to 11.4.2528.23 caused most remote laptops to go offline

We upgraded to on-prem Endpoint Central Enterprise Edition to Version11.4.2528.23 last week. Now most of out external laptops are now offline.

Which URL should we be using for updates? I notice dramatical different versions and Readme's 
11.4.2528.24
11.4.2540.08


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