@cristian-adam said in Qt Creator V6.0.2 Suddenly stopped syntax highlighting and code completion.:

With Qt Creator 7 we're moving to clangd which will be a different way of having syntax highlighting.

QtC7 didn't fix the issue of whole regular QtC freezing, when using the clang code model. It's slightly less regular, bit still just barely useable, compared to 5.0.3 that is still running on my Mac

@JKSH Hi! I came across this too. I feel that it has worked for me in the past, e.g. using a simple std::vector<QString> and then expecting code completion on typing myVector[0].

But it's not working in QtCreator 3.4.0, not even with the plugin you mentioned... Anything else I can try?

EDIT: Nevermind, found out that I have to enable it in the preferences too... it's working but a bit slow...