Client Certificate Authentication

I am using a Client Certificate(.crt) for authentication and getting the following 401 Unauthorized error message

“Provide credentials using a client certificate, LPTA security token or username and password via HTTP basic authentication.”

I am only providing the .CRT file not the Key file. I checked the postman console and I can see the certificate it in the log

Any help would be greatly appreciated

Anyone know what’s happening?

Hello @naespeekforyou ,
Welcome to Postman community!
Could you please check the intermediary certificates that need to be in place? Few sites often send the ‘.crt’ files and the intermediaries separate. You should append all of them together, and re-deploy your server, in order to correct this problem.

Thank you!

What’s an intermediary certificates?

Could you please check if this helps to understand intermediaries while setting up SSL?