Millions of smartphones running Android and iOS operating systems, as well as Windows PCs, will lose the ability to visit websites. We can say that they will actually be disconnected from the Internet.
According to TechCrunch, many smartphones, tablets and PCs use the IdentTrust DST Root CA X3 certificate issued by Let’s Encrypt.
This certificate provides encryption of data between sites and devices. It is necessary to protect information from interception.
It expires on September 30 this year. The reasons are not explained.
To solve the problem, if it has arisen on outdated operating systems, users will have to update the operating system. Then the outdated IdentTrust DST Root CA X3 will be replaced with the new ISRG Root X1. This protocol is valid until 2035.
You can also use Firefox 50 or later, because it has its own root certificate store and does not use third-party ones.