Certificate signed by an untrusted issuer

Certificate is stating this error:

This certificate was signed by an untrusted inssuer

The issuer was my subCA (we have an offline rootCA) as well.

I apologize, I don't know much about PKI Infrastructure and how to troubleshoot this but.... if someone could point me in the right direction, I'd greatly appreciate it.
Dave NimaiAsked:
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Shimshey RosenbergSysAdminCommented:
Where did you get this? This is most likely caused by self-signed certificates, as you mentioned that is was your subCA. do the clients trust this as a root CA?
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MaheshArchitectCommented:
what happened here is your sub ca certificate or / and root ca certificate is not installed on clients trusted root certificate store and hece you are getting abovee rror

U need to install root ca cert and sub ca certificate public key on affected machine or on all machines by group policy
Check below link
https://docs.microsoft.com/en-us/windows-server/identity/ad-fs/deployment/distribute-certificates-to-client-computers-by-using-group-policy
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Seth SimmonsSr. Systems AdministratorCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Mahesh (https:#a42498047)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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