isrg Rollt X1 by Let’s encrypt searched in Dragon:
Privacy and security—> Manage certificates
Manage HTTPS/SSL certificates and settings—>Intermediate Certification Bodies (third menu) and there you can find the certificicate
4.certificate downloaded (export) xxxx.cer
on my PC in VTRoot\harddiskvolume2\dragonportable\dragon
This certificate I blocked in firewall, HIPS and in containment. No more message.
I am not familiar with the advanced functions. attachment 1b
I can only import or export a certificate but not remove (can’t be selected - grayed out) attachment 1a
in comodo help:
Remove expired or revoked certificates
Select the certificate to be deleted and click ‘Remove’.
One of my clients reported a similar certificate error (ISRG Root X1) and they received the following note from their ISP;
[i]Upstream SSL update causing email issues on older programs
New incident: Investigating
On September 30 2021, Let’s Encrypt updated their ROOT certificate.
The ROOT certificate is responsible for issuing SSL Certificates by Let’s Encrypt.
This change has caused the older ROOT certificate (DST Root CA X3) to no longer be accepted, this has been replaced with ISRG Root X1.
Some Email programs may still be referencing the older Root Certificate being (DST Root CA X3) and causing the mail clients NOT to validate the SSL SMTP and IMAP connections. This may be an issue with older devices that are not compatible with the new ROOT certificate.
For the full press release from Let’s Encrypt please see the link below.