No authentication usually means you don't have an activation key to use the app, but it would be best that you share a screenshot so we can see things from your point of view.

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I am also having the same issue, I am getting the error before it even prompts me to put in the activation key. Not sure what the issue is.

Edit #1:
Update - I downloaded 7.1 Surround Sound on my laptop and it lets me log in just fine. What could be preventing the login from working on my desktop vs my laptop?

Edit #2:
Update - Solution to problem found, uninstall the 7.1 Surround Sound and restart your PC with it uninstalled. Reinstall after the restart and it should work fine.

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Schmolk
I am also having the same issue, I am getting the error before it even prompts me to put in the activation key. Not sure what the issue is.

Edit #1:
Update - I downloaded 7.1 Surround Sound on my laptop and it lets me log in just fine. What could be preventing the login from working on my desktop vs my laptop?

Edit #2:
Update - Solution to problem found, uninstall the 7.1 Surround Sound and restart your PC with it uninstalled. Reinstall after the restart and it should work fine.

I appreciate you updating the thread and sharing the solution you found. I'll be locking this thread as resolved, but please don't hesitate to shoot me a PM should you need further assistance.

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