invalid redirect_uri. This value must match a URL registered with the API Key.

Should I say: It once worked! But I don’t know when, but some updates later the functionality was gone, maybe the API expired, I refreshed it (or tried to), but to no avail. Then I have deleted the API and created a new one, but it doesn’t work either.

Hi, the redirect_uri changed in 1.18, please make sure the one you registered with your LinkedIn API keys is the one given on the settings’ page

I of course have added everything as explained in the plugin settings page. What else must I do?

the redirect_uri that you registered should be something like https://yourdomain.com/oauth/linkedin

what you can try too is to go to the permalinks setting page and save it (no need to change anything)

Hm, I did this, but still no connection.
My “OAuth 2.0 Redirect URLs” is https://www.kim-bostroem.de/?oauth=linkedin. I pasted the API key and the secret key as given by the application settings.
My permalinks settings are set to “Standard”.
Maybe some SSL issue? Should I replace the “http” with “https”? Is there a server blacklist on the LinkedIn side?

if you have the latest version of the plugin it should be working with the default permalink settings but I recommend you switch to something else than the default, and make sure your registered redirect_uri is https://www.kim-bostroem.de/oauth/linkedin

OK, I changed the redirect uri to “https://www.kim-bostroem.de/oauth/linkedin” in the API settings, and then switched the permalink settings to “/%post_id%” in my wordpress site.
I still get no connection.
When I directly go to “https://www.kim-bostroem.de/oauth/linkedin”, my browser gives an error:
“Fehler: Umleitungsfehler
Die aufgerufene Website leitet die Anfrage so um, dass sie nie beendet werden kann.
Dieses Problem kann manchmal auftreten, wenn Cookies deaktiviert oder abgelehnt werden.”
Roughly translated:
“Redirection error. The website redirects the request so that it never can be stopped. This problem may be related to deactivated cookies.”

Let me try to deactivate all my plugins. Maybe there is some compatibility issue…

Nope. Now with only “WP LinkedIn” activated I still get a redirection error. Now when I directly go to “https://www.kim-bostroem.de/oauth/linkedin” it eternally reloads the page in an endless loop.

what version of the plugin do you use and what is the redirection_uri that the settings’ page is giving you?

also, can you paste here the url you are sent to when you try to regenerate the token?

WP LinkedIn version 1.19.
With my new permalink settings the redirection url indicated in the WP LinkedIn settings is “https://www.kim-bostroem.de/oauth/linkedin/”.
The plugin error message appearing in my wordpress dashboard provides the following “click here” link:
“https://www.linkedin.com/uas/oauth2/authorization?response_type=code&client_id=7570szbs7gj8pi&scope=r_fullprofile+rw_nus&state=37ce6a2cfb24953abf86d79b3fff2ea006e0d89d&redirect_uri=http%3A%2F%2Fwww.kim-bostroem.de%2Foauth%2Flinkedin%2F%3Fr%3D%252Fwp-admin%252Foptions-general.php%253Fpage%253Dwp-linkedin”
Clicking on that link gives me an error message saying “invalid redirect_uri. This value must match a URL registered with the API Key.”

And when I click “Regenerate LinkedIn Access Token” in the plugin settings, it directs me to “https://www.linkedin.com/uas/oauth2/authorization?response_type=code&client_id=7570szbs7gj8pi&scope=r_fullprofile+rw_nus&state=37ce6a2cfb24953abf86d79b3fff2ea006e0d89d&redirect_uri=http%3A%2F%2Fwww.kim-bostroem.de%2Foauth%2Flinkedin%2F%3Fr%3D%252Fwp-admin%252Foptions-general.php%253Fpage%253Dwp-linkedin”
and it gives me the same redirection error message like above.

can you post a screenshot of the settbgs page and the API registration page?

Hi,
I am expriencing the exact same issues. I have fresh installation. I tried to play with permalinks settings but nothing helped.

what is the redirect_uri which is indicated on the settings’page and which one did you register eith the API?