Displaylink ceases to work in 10.13.4

[donluca]

Originally Posted by JOEEDS

So what do I do if I have already downloaded 10.13.6 and when I download this combo it won't let me install?

You're basically fucked, like most of us. You can't downgrade unless you want to do what others suggested you: backup all your stuff somewhere safe, format your Mac and install the base High Sierra, disable automatic update and then update to 10.13.3 using the combo updater.

My issue with this is that I've updated several apps and I'm afraid they won't work anymore if I go back to 10.13.3, which means I would have to uninstall them and install them fresh, losing all the settings and stuff in the process, which is a huge time waste and big no-no for me.

You'd better wait for DisplayLink to come up with a properly working driver.