ServiceNow - HTTPS Error - Session contains no certificates - Untrusted

1)

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0816002

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0863109

download server x509 cert from browser. (select base-64-encode x.509 cert)

then go to servicenow

system definitions: certificates

new -> add ur new pem cert and vaidate

If above does not work, turn off SSL validation 

2) https://community.servicenow.com/community?id=community_question&sys_id=074a4a7fdb432410fb4ae15b8a9619e4

Search in UI for MID Security Policy then turn off ssl validation for public or prviate IP addresess

3) if does not work

use https://docs.servicenow.com/en-US/bundle/utah-platform-security/page/administer/security/reference/http-client-verify-hostname.html

add this to sys_properties : 

Use the com.glide.communications.httpclient.verify_hostname to verify hostname and certificate chain presented by remote SSL hosts.

Set com.glide.communications.httpclient.verify_hostname to true to protect against MitM (man-in-the-middle) attacks in which communications between two parties are intercepted. Setting this property overrides the com.glide.communications.trustmanager_trust_all property.