The previous version key is not accepted

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I am trying to activate an upgrade copy of Parallels Desktop for Mac, but the key for previous version is not accepted.


An upgrade to every Parallels Desktop copy is only supported from two previous versions.

For example, an upgrade to Parallels Desktop 12 for Mac is only supported from Parallels Desktop 11 and 10.


If your key for previous version is too old to be used during upgrade, you should buy a full license for the Parallels Desktop version you are trying to activate.

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