cPanel: Firefox users see "sec_error_ocsp_try_server_later" Print

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Problem: You've installed your SSL certificate on to your cPanel server, and most browsers are able to access https:// just fine, except Firefox. Firefox is giving you the error "sec_error_ocsp_try_server_later"

Don't panic! This is a really simple problem to solve. It's caused by a conflict between the web server (Apache) telling the browser (Firefox) what it can do, but the Apache configuration not being able to do it. Here's how we fix it:

  1. Log in to your server's WHM interface as root or a priveledged user
  2. Go to Service Configuration, then Apache Configuration
  3. Choose Include Editor, then from the drop down for Pre Main Include select All Versions

Once you see the text editor for the include file of All Versions, there may already be some configuration lines in there. If there are, simply scroll to the bottom of the window, then paste in the following:

SSLUseStapling on
SSLStaplingCache shmcb:/tmp/stapling_cache(32768)

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