Postman callback not working. Was working till 1st week of august 2025

Help Hub
1

After Browser authentication postman is still waiting for client callback

4 Likes
2

reporting same problem
11.58.5 postman broke oauth2 call back. Major issue
I had to install 11.58.0 which is working. But postman auto updates to latest, which breaks it again.

3

Same issue today after Postman updated to 11.58.5 this morning and not able to authenticate anymore via browser anymore. Downgraded to Postman v.11.57.6 and it works. However it downloaded the newest version again, so I will not restart Postman for a while

4

Also here with 11.59.0. Error in Postman app dev console is “Unhandled Promise Rejection: ProtocolHandler~handleProtocolUrl: Incorrect URL format”. Fortunately I’m able to extract the access_token and work around this

image

5

Hi all.

I apologize that you’re experiencing this. The team is working hard on a fix as we speak. This should be resolved soon, and you’ll continue to use the OAuth flow as usual.

6

Hi all, this issue has been resolved in Postman release v11.59.1 and later versions. Please update and confirm that everything is working correctly on your end. We apologize for any inconvenience this may have caused.

2 Likes
7

Yes, works again now in release v11.59.1

8

It seems the same problem occurs when a second access token is requested shortly after the first. An Untitled window stays open in the browser. The workaround is to hit Enter in the URL and then click Open Postman on the popup window.
v11.59.3