Q: Persistent invalid certificates problem
Suddenly, my web browsers are telling me that they can't verify the identity of a number of websites that I frequently use and that the certificates are invalid. I can't choose to continue past that alert, and I am unable to get the browsers to trust the sites. Also, on YouTube I am permanently in Restricted Mode and am unable to toggle that setting off.
I have looked at a number of posts relating to this issue, and while some of the technicalities are a little over my head, I've tried the solutions offered. I have checked to make sure Date and Time are correct. I've looked at Activity Monitor to see that a process called "ocspd" is running (affirmative). I have used Keychain Access's "Reset My Default Keychain" command and its "Delete Keychain 'login'" command (both references & files). I've also rubbed out in the Finder the Library's Keychains folder and Keychain files in the Library's Preferences folder. I guess that's about it. None of that has altered the situation a bit.
Is there anything else I should try? Can anyone offer an explanation of this problem, which arose seemingly spontaneously? I have a clone of my system from two and a half weeks ago that I am tempted to reinstall. I'm pretty sure that would roll me back to a state from before this problem started (I only noticed this problem a couple of days ago). But I'm more than willing to try other more specific fixes before I do that.
Thanks for any ideas!
iMac, OS X Yosemite (10.10), 2.4 GHZ Intel Core 2 Duo, 4 GB RAM
Posted on Sep 22, 2016 7:25 PM
Success! When tech support (senior-advisor level) learned that reinstalling OS X made no difference, he talked to engineering. They said this was a very unusual sounding problem but advised him to talk with my ISP. And that is where the problem was. My ISP found a partial service outage on one of their repeaters that my account was connecting with, and after they repaired that outage, my certificate problems with certain websites and the issue with YouTube's Restricted Mode being stuck on "On" disappeared.
The tech advisor said that now that we know what the issue was, we could have spotted it by pinging the problematic websites. Evidently, we would have seen frequent unsuccessful pings. I definitely learned something about how narrow and specific ISP service issues could be. (I had rebooted my modem/router to no effect; the problem had to be addressed on the ISP side.)
I am definitely pleased with Apple's support on this problem.
Posted on Sep 24, 2016 12:22 PM
