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Latest macOS update cripples enterprise docks, blanks external screens

When Apple’s latest macOS update blanked external screens, third-party hardware vendors scrambled to warn customers and caused Mac users to call each other names.

macOS 10.13.4, which Apple released March 29 and immediately began pushing to users, has crippled DisplayLink, the technology from the same-named company that allows multiple monitors to be connected to one PC, often through a hardware dock, via USB, Ethernet or even Wi-Fi. Companies including Dell, HP and Kensington sell docks that rely on DisplayLink.

When Mac users saw blank displays, they raised a ruckus on Apple’s support discussion forum. Many work in corporate offices that had equipped workers with docks for their Mac, and multiple monitors that no longer showed anything.

“I’ve got a very large number of Macs that I cannot permit this upgrade to be deployed to in my enterprise as it will cause enormous support issues,” reported BradSP on March 30, who caught on to the problem before he rolled out 10.13.4.

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