How to change the password on 500px web publishing

[DiegoV]

I recently changed my password on my 500px account but I don't see a way to change it on the fastpictureviewer web publishing plugin. Any ideas?

[Axel]

As silly as it sounds, there is no mechanism to reset the access credentials stored in FPV Pro at this time (we must think of something, like a "Reset credentials" button on the plug-in's About page).

In the meantime, here is a (little barbarian) fix: using regedit.exe, navigate to

HKEY_CURRENT_USER\Software\ARSD\FastPictureViewer\Publishing\Plugins\{23B2FD19-6B49-489D-B186-F821E1A94241}

You will find all the 500px plugin's parameters in there, notably a value named 'PrivateStream' which contains your authorization credentials, strongly encrypted.

Just erase this value (right-click its name and click Delete) and the plug-in will ask for a new authorization the next time you use it.

As a side note, your password is *not* stored there. In fact, FastPictureViewer never had your 500px password as the authorization is made on the 500px site itself: what we store is the authorization token created by 500px and which can be revoked from the 500px.com website just like you'd un-authorize any other app.

[DiegoV]

Thanks for the input but now when I try to authorize it, it gives me this error:
Could not connect to the 500px authorization server. The error code was 0x80004005. Unspecified error. I also tried updating to the latest version of fastpicture viewer with the same result.

[Axel]

Yes, we know that. We wrote to 500px about this, as we get a "server error" back from them, but no satisfactory answer so far (after about a week)

[Axel]

I got some news: apparently 500px forgot about FastPictureViewer! More concretely, the app registration on their site is no longer there for some reason, and since apps authenticate themselves with a special { key + secret } pair, which was no longer on the 500px servers, it was impossible to authenticate new FPV copies (but already authenticated instances kept working and it was still possible to upload images).

A tech is looking into this as I write this, hopefully they will be able to restore or recreate the registration on their side and your installed FPV Pro copy will start working again auto-magically, i.e. you'll be able to authorize the program and upload your pics. At worse the 500px plug-in will need a new pair of keys and you'll need to download FPV Pro again to fix the problem.

More on this later...

[Axel]

Everything is back to normal, you should be able to authorize FastPictureViewer on 500px again now, no need to reinstall or update anything.