Apple Mac Safari Browser doesn't show pages correctly or says web site unavailable

An issue was encountered where the Safari Browser on an Apple Mac would not properly display pages from web sites (e.g. images were missing) or it occasionally reported the site wasn't available.  This problem was resolved by clearing the accepted certificates cache.

12 May 2016 How to...  Apple Macs

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When trying to browse web sites using Safari on a Mac, the pages from a number of different sites were poorly formatted with few if images shown.  In some cases the site wouldn't load at all and Safari reported it was unavailable.  Further investigation also showed the Mac reporting that it could not connect to the App Store.

The problem related to the cache of certificates that OS X keeps. Once the cache was cleared (deleted) and the Mac restarted the pages displayed correctly and the App Store was available again.

To clear the accepted certificates cache:

  1. Open the Finder.
  2. Choose Go to Folder from the Go menu.
  3. Type /var/db/crls/ in the Go window.
  4. Click Go.
  5. Delete crlcache.db and ocspcache.db by dragging these files to the Trash.
  6. Enter an administrator password if you are prompted.
  7. Restart the system and the issue should be resolved.

For further details see this Apple Support Article

https://support.apple.com/en-gb/HT203811

Tags  apple mac

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