Once i go to Eclipse Marketplace option i get this error message: MarketplaceDiscoveryStrategy failed with an error Unable to read repository at http://marketplace.e
Please, add this line on eclipse ini, restart eclipse, open Marketplace and good installations:
-Dorg.eclipse.epp.internal.mpc.core.service.DefaultCatalogService.url=https://marketplace.eclipse.org/catalogs/api/p
This problem is that link without ssl is not working. For me that is working normal.
Try removing RelaventKnowledge software from your machine. Mine is Windows 10. I am not getting that error once i removed that software from the machine.