I’ve currently been without use of Simplify3D since last Friday and have been going back and forth with S3D’s customer support with not much luck. The issue is that I frequently reinstall my OS due to my job as a Software Engineer. Granted, I forget to deauthorize S3D before wiping the drive.

S3D’s website allows deauthorization of used activations, but only in a limited amount:http://i.imgur.com/yoRyBzy.png

As the software checks activation on startup, I don’t see why S3D limits deauthorizations. Adobe has the same business model and I can easily deauthorize any machine, any time without limits: http://i.imgur.com/DtFNNDm.png

I wish I known this before purchasing Simplify3D as they advertise use for up to two physical machines per license, but such is not the case with their limitations on activation, at least if you frequently reinstall your OS.

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