Subject Alternative Name missing Error under Browser (SAN Missing)

Subject Alternative Name missing Error under Browser (SAN Missing)


Error :



Solution:

Please find below the commands that can be used to create the keystore and corresponding CSR request with SAN included:

Keystore creation

keytool -genkey -alias <your_alias_name> or [Domain Name] -keyalg RSA -keysize 2048 -sigalg SHA256withRSA -keystore sdp.keystore -ext san=dns:<fqdn>

CSR creation

keytool -certreq -alias <your_alias_name> -sigalg SHA256withRSA -file key.csr -keystore sdp.keystore  -ext san=dns:<fqdn>

These commands should create a keystore and corresponding CSR request with the custom SAN provided.
By obtaining a certificate with this CSR and installing the resultant certificates into the keystore, should fix the issue that occur with Chrome browser.

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