Luis Sequeira1 wrote:
The errors that happen for some users but not all (or sometimes but not all) are the hardest to figure out, and this seems to be one of those.
Regarding remote access to a mac, it is usually very easy. Back to my mac works quite well, allowing me to access my home iMac from wherever, just by clicking in the Finder sidebar.
I just had to laugh at this. I have had many Macs over the last 15 years or so with networking provided by variety of different modems/routers at different times, and I have NEVER succeeded in getting Back to My Mac to work reliably, no matter what ports I open, close, forward, etc. I gave up on it a few years ago as another feature which 'just doesn't work' and moved to a VNC tool instead, which works reliably every time. Don't get me wrong, I use Windows in the workplace and loathe it, but at least when it goes wrong you can fix it with a bit of effort. When Macs go wrong it's usually because Apple's solution simply doesn't work in your use case and there's nothing you can do about it.
Having finished migrating to El Capitan on my son's laptop as well as the family Mini, I do seem to have got things working, by taking the 'one setting at a time, lock the padlock, exit settings, wait a bit, go back in and do the next one' advice above. The settings are remaining set, and the computers do actually restrict access as advertised. Tiresome though, and I still have the problem that I need to manually unlock every secure address accessed by every app and every piece of advertising on every page anyone visits, which is pretty soul-destroying.