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Root causes of Connector error 12057 are analyzed and solution or work around are provided in this article.
User got an HTTP error “12057″ while trying to add a new place to the Quickr connector, He/she is using HTTPS with a valid certificate issued by a well-known CA.
IE tries to verify via Internet if the SSL certificate is locked but failed.
Uncheck the following option in Internet Explorer:
Tools -> Internet Options -> Advanced -> Security options -> “Check for server certificate revocation”
pls refer to “Quickr Connector: Error 12057 while trying to add a place
” for more detailed information.
User got an HTTP error “12057″ while trying to add a new place to the Quickr connector, He/she is using HTTPS with a valid certificate issued by an enterprise CA.
the CA root certificate has not been imported in the client side as a trusted certification authority.
Import CA root certificate in the client side as a trusted root certification Authority.
e.g, if the CA is a domiono server, then the CA root certificate can be fetched by accessing Domino CA certificate request DB in you browser and click "Accept This Authority in your server" as shown in pic 1, then copy/paste and save the certificate content to a certificate file, and import it into "Trusted Root Certificate Authorities" in in Internet Explorer via "Tools -> Internet Options -> Certificate -> Trusted Root Certification Authorities -> Import" as shown in pic 2.
Use a free https proxy server.
Even If the CA root certificate is unknown, Connector still can access the HTTPS server via a free https proxy like fiddler. you only need to make sure
the fiddler root certificate has been imported as trusted root certification Authority as shown in pic3, and configured fiddler to "ignore server certificate
error" as shown in pic4. Then all connector's https requests will be proxied by fiddler, that means connector is actually connecting to the fiddler
proxy server whose CA has already been trusted by your web browser.