maybe I've missed some announcement but I couldn't find anything..

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I have a system that loads the following URL:

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https://www.reddit.com/api/v1/authorize.compact?client_id=ABCD&response_type=code&state=granted&redirect_uri=https://www.reddit.com/r/ketoscience/&duration=permanent&scope=submit

Note that ABCD is not the real client id

The above url is shown in a browser to the user where they have the choice to accept or decline the authorization.

When the user clicks on accept, normally the next page loads with the following as an example:

https://www.reddit.com/r/ketoscience/?state=granted&code=vc-nABa1TAB-a_rgDqBABAB2tR6c0Rg

As you can see it uses the site that was passed on in the original link via redirect_uri and in addition it has added a "code" parameter that I need in the next step to request a token.

But since today, it returns: https://www.reddit.com/r/ketoscience/?state=granted&error=invalid_request#_

Something is broken.

Further info:

This is in an MS Access database which has a browser widget. It uses Internet Explorer which is old I know but I cannot change that and everything worked fine until yesterday.

It has nothing to do with IE though. I also pasted the first URL into Chrome, click on Accept and get the same result.