My legally purchased Photoshop CS3 that has been running for years was just disabled

[Vance32051483fe1o]

My legally purchased and registered Photoshop CS3 that has been running for years was just disabled by some Adobe process running on my machine.  How can I get it un-disabled?

It is Photoshop CS3 running under Windows 10.  To reproduce I just launch the app.  I expect to use the program and the actual result is that the app is blocked from any use.

-Vance

[D Fosse]

Where and when did you buy it?

In any case, CS3 activation servers have been shut down (this is, after all, fifteen year old software). It can not be activated.