Firefox for mac 10.11 6 software#

Also, you may need to close and reopen any software and/or browsers for it to work with the new certificate. If youР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›re still having issues, you can try deleting the Р В Р вЂ Р В РІР‚С™Р РЋРЎв„ўDST Root CA X3Р В Р вЂ Р В РІР‚С™Р РЋРЎС™ certificate from your existing Root CAs.

The LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt certificates that are used on websites that you visit and that you might have deployed on your servers should now work without any issues. You only need to add the two root certificates.

Firefox for mac 10.11 6 full#

You can download them by clicking the links above or go to for more information and to download if you donР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›t trust the above links.Р В РІР‚СњР В РІР‚С›fter downloading and adding these Root CAs and the Intermediate CA to your computer or device, you should have the full certificate chain to validate the LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt certificates.

LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt R3 (Or LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt R3 DER Format).

ISRG Root X2 (Or ISRG Root X2 DER Format).

ISRG Root X1 (Or ISRG Root X1 DER Format).

To fix this issue, you need to add the 2 new Root CAs to your computer or device. Older devices may be using the older Root CA which expired today (September 30th, 2021). However, as time has passed and the service has been used more, they now use Р В Р вЂ Р В РІР‚С™Р РЋРЎв„ўISRG Root X1Р В Р вЂ Р В РІР‚С™Р РЋРЎС™ and Р В Р вЂ Р В РІР‚С™Р РЋРЎв„ўISRG Root X2Р В Р вЂ Р В РІР‚С™Р РЋРЎС™ as Root CAР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s and Р В Р вЂ Р В РІР‚С™Р РЋРЎв„ўLetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt R3Р В Р вЂ Р В РІР‚С™Р РЋРЎС™ as an intermediate certificate. LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt originally used the Р В Р вЂ Р В РІР‚С™Р РЋРЎв„ўDST Root CA X3Р В Р вЂ Р В РІР‚С™Р РЋРЎС™ certificate to issue LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt certificates.

In my environment, I noticed a number of issues when browsing to websites that use the free LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt certificates, as the Web Protection Web Filtering service on my Sophos UTM firewall would report the certificate has expired and not allow me access to the websites using it. Some of these problematic devices include Samsung Galaxy phones, iPhones, VDI zero and thin clients, and even Sophos UTM firewalls. Today, the DST Root CA X3 certificate expired, leaving many devices on the internet having issues connecting to services and certificates that use this Root CA, including those using LetР В Р вЂ Р В РІР‚С™Р Р†РІР‚С›РЎС›s Encrypt certificates.