Calling Google APIs using OAUTH2.0

I am looking to test some Google APIs in POSTMAN. I found the following link very useful:

I was able to get to the point where it authenticated me (using OAUTH2.0), but then I got the message:
Couldn’t sign you in

This browser or app may not be secure. Learn more

Try using a different browser. If you’re already using a supported browser, you can refresh your screen and try again to sign in.

Thanks for your help!

Hi @JPHadjiandreou

It looks like you are running to a known issue which is currently being tracked on GitHub tracker and below is the link for the same:

Thanks for responding! I have checked the link and other links and they don’t seem to have a solution that works for me - I tried to login to postman using the ‘web browser’, but that also didn’t work.

Could you please let me know what else you suggest I try.


hi i am facing the similar issue and did not get any concrete solution .
If i am using the authenticate by browser option , the call back url changes , which is causing issue in retrieval of access token .

Please can you help me how to get the access token . When postman give the error unsecure browser while logging in to gmail