Certificate expired

The servers are using the new path:

IIS 10, Windows 2019 Core

"Let’s Encrypt Modern Chain (May not support some older devices)

This Let’s Encrypt chain uses the newer ISRG Root X1 root, which is trusted by current operating systems. This chain may cause issues for some old devices, particularly Android 7.0 and lower."

But Chrome on Android 8, 9, 10, 11 are giving me the “Your Connection is not secure”

Some example:


Any suggestion?

I’ve deleted your cross post because your information is incorrect.

It looks like our test chain checker is not seeing the fault in your chain, see I’ll remove the link for now.

If you check this one: https://decoder.link/sslchecker/lavezzinifly.it/443

You will see that you server is still using the expired R3 intermediate.

You must:

  • Install the latest Certify The Web
  • Reboot

If you only do one thing, reboot. Windows is holding on to the expired R3 in the chain it is serving.