Hi @deepakc,
Both the ReCAPTCHA issue and the ORCiD issue on your other thread have the same cause: something like a firewall or a proxy on your server is preventing the Guzzle library that OJS uses from connecting to an outside service.
We have no way of knowing what your server’s config is, and the issue is outside of OJS, so it’s hard to help further here.
If you want to isolate the problem, you could try creating a simple Guzzle script outside of OJS and testing that. I found some instructions you could follow here. If you can replicate the problem with a test script like this, it’s likelier that you can show this to your server admin and get the help you’re looking for.
Regards,
Alec Smecher
Public Knowledge Project Team