Tropo

I started having problems immediately after the 10.11.3 update and spent most of yesterday trying to sort out the issues like USB hard disk not being recognised, email accounts not accessible and some websites being blocked. I spent today taking a one hour each way train trip to my closest Apple Store in Lyon, France. Four hours and four Genius Bar experts later we discovered that uninstalling Eset solved the problem. It would have been nice to know about this issue earlier. I don't think I will bother to reinstall it.