Unable To Get Local Issuer Certificate Postman, How to resolve it?
by Maria
Updated Mar 27, 2023
Unable To Get Local Issuer Certificate Postman
When making an HTTPS request, the client (Postman in this case) needs to verify the SSL/TLS certificate presented by the server. The SSL/TLS certificate contains a chain of trust that the client needs to validate. This validation process involves verifying the certificate chain, checking the certificate's expiration, and ensuring that the certificate was issued by a trusted certificate authority.
The "Unable to get local issuer certificate" error occurs when Postman cannot find the trusted root certificate authority that issued the SSL/TLS certificate for the server it is trying to communicate with. This can happen if the SSL/TLS certificate presented by the server is issued by a certificate authority that is not trusted by Postman or if the certificate chain is incomplete.
To resolve this error, you can follow these steps:
Check if the SSL/TLS certificate is valid: Ensure that the SSL/TLS certificate presented by the server is valid and not expired. You can check the validity of the certificate by inspecting it in a web browser or by using an SSL/TLS certificate validation tool.
Import the SSL/TLS certificate into Postman: If the SSL/TLS certificate is valid but not trusted by Postman, you can import it into Postman to establish trust. To do this, click on the "Settings" button in Postman and select the "Certificates" tab. Then, click on the "Add Certificate" button and select the SSL/TLS certificate file.
Update the SSL/TLS certificate chain: If the SSL/TLS certificate chain is incomplete, you can update it by including the intermediate certificate authority certificates in the certificate chain. You can obtain the intermediate certificate authority certificates from the certificate authority that issued the SSL/TLS certificate.
Check your network configuration: If none of the above steps work, there may be an issue with your network configuration. Ensure that your network is configured to allow SSL/TLS connections and that there are no firewall or proxy issues blocking the connection.
By following these steps, you can resolve the "Unable to get local issuer certificate" error in Postman and continue to test and manage your APIs.
Cause Of Unable To Get Local Issuer Certificate Postman
The "Unable to get local issuer certificate" error message in Postman typically occurs when Postman is not able to verify the SSL certificate of the API endpoint. This error can be caused by a variety of factors, including:
Missing or outdated root certificates: SSL certificates are verified using a chain of trust, and this chain starts with a root certificate that is trusted by your operating system. If the root certificate is missing or outdated, Postman will not be able to verify the SSL certificate of the API endpoint.
Self-signed SSL certificates: If the SSL certificate of the API endpoint is self-signed, it will not be trusted by your operating system. As a result, Postman will not be able to verify the SSL certificate, and you will see the "Unable to get local issuer certificate" error message.
Proxy server configuration: If you are using a proxy server to connect to the API endpoint, the SSL certificate verification may fail due to misconfiguration of the proxy server.
How To Resolve Unable To Get Local Issuer Certificate In Postman?
Now that we know the cause of the "Unable to get local issuer certificate" error in Postman, let's look at some steps to resolve it:
Install missing root certificates: To resolve this error, you may need to install the missing root certificate on your operating system. You can download the root certificate from the website of the Certificate Authority (CA) that issued the SSL certificate of the API endpoint. Once you have downloaded the root certificate, install it on your operating system and restart Postman.
Update outdated root certificates: If your root certificates are outdated, you can update them by installing the latest updates for your operating system. This will ensure that your operating system has the latest root certificates, which Postman can use to verify SSL certificates.
Ignore SSL certificate errors: If you are sure that the SSL certificate of the API endpoint is valid, you can choose to ignore SSL certificate errors in Postman. To do this, go to the Postman settings and disable the "SSL certificate verification" option. However, this is not recommended as it can expose you to security risks.
Import self-signed SSL certificate: If the SSL certificate of the API endpoint is self-signed, you can import it into Postman's certificate store. To do this, go to the Postman settings and click on the "Certificates" tab. Then, click on the "Add Certificate" button and select the self-signed SSL certificate. Once you have imported the certificate, Postman will be able to verify the SSL certificate of the API endpoint.
Check proxy server configuration: If you are using a proxy server to connect to the API endpoint, ensure that the proxy server is configured correctly. Check the proxy server settings in Postman and ensure that the SSL certificate verification is enabled.
In conclusion, the "Unable to get local issuer certificate" error in Postman can be caused by a variety of factors, including missing or outdated root certificates, self-signed SSL certificates, and misconfigured proxy servers. By following the steps outlined in this article, you can resolve this error and continue testing and managing your APIs with Postman.
Unable To Get Local Issuer Certificate Postman - FAQs
The "Unable to get local issuer certificate" error in Postman is an error message that occurs when Postman is not able to verify the SSL certificate of the API endpoint.
The "Unable to get local issuer certificate" error in Postman can be caused by missing or outdated root certificates, self-signed SSL certificates, and misconfigured proxy servers.
To resolve the "Unable to get local issuer certificate" error in Postman, you can install missing root certificates, update outdated root certificates, ignore SSL certificate errors, import self-signed SSL certificates, and check the proxy server configuration.
If you encounter the "Unable to get local issuer certificate" error in Postman, you should follow the steps outlined in this article to resolve the error.
Ignoring SSL certificate errors in Postman is not recommended as it can expose you to security risks.