I have installed Eclipse 2020-3 and now facing the error
Error while downloading 'http://maven.apache.org/xsd/maven-4.0.0.xsd' to C:\Users\Fabian.Meier\.lsp4xml\cache\http\maven.apache.org\xsd\maven-4.0.0.xsd.
on every POM. At other places it was suggested to configure the proxy correctly.
But our proxy just does not allow Eclipse to connect to the internet at all.
Can I use my Eclipse offline without facing the error above?
Try to disable Language Server errors : into Preferences -> Language Servers and turn them all off.