It depends upon the exact error messages you can get, but often it can help to set an increased browser emulation during the registry. You'll find more information on that e.g. at Daniel Pineault's web site. When you are new to WordPress, here is a phase-by-stage system for getting going. https://marcofugtv.tusblogos.com/37021307/wordpress-maintenance-and-support-no-further-a-mystery