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Is it possible to downgrade to 2017 after having upgraded to 2021? I'm running 2021 on my desk top and my license is activated with 2021.
I tried installing 2017 but when I opened the 2017, the license activation window popped up and required me to activate a license. I clicked "cancel" to close the pop-up window, it shut down the 2017 and nothing happened.
