Transfer from http://mozilla.com.cn/thread-230404-1-1.html
How are you doing. Digicert Digital Certificate Authority OCSP Server failed in domestic access (gfwed), causing a Web site with Digicert digital certificates to be accessed in Firefox.
Causes Firefox's addons.mozilla.org and other websites and extensions unable to install.
You can add the following information to the system hosts:
117.18.232.191 addons.cdn.mozilla.net
117.18.232.191 mozorg.cdn.mozilla.net
117.18.232.191 developer.cdn.mozilla.net
117.18.232.191 support.cdn.mozilla.net
117.18.232.191 marketplace.cdn.mozilla.net
117.18.237.191 getpersonas.cdn.mozilla.net
117.18.237.191 code.cdn.mozilla.net
117.18.232.191 air.cdn.mozilla.net
117.18.232.191 videos.cdn.mozilla.net
117.18.232.191 glow.cdn.mozilla.net
117.18.232.191 download-installer.cdn.mozilla.net
117.18.232.191 download.cdn.mozilla.net
117.18.232.191 fhr.cdn.mozilla.net
117.18.232.191 activations.cdn.mozilla.net
117.18.232.191 cdn.mozilla.net
117.18.232.191 snippets.cdn.mozilla.net
117.18.232.191 telemetry-experiment.cdn.mozilla.net
117.18.237.29 ocsp.digicert.com
Firefox plugin failed to download