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I just upgraded my webserver from Plesk 8.3 to Plesk 9. Now it's asking me for a new licence key I don't have! I'd like to come back to the old version, but my last backup doesn't work. What shall I do?

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2 Answers 2

up vote 1 down vote accepted

Upgrade your license key to 9.x.

Even if there is a way to downgrade Plesk (and I really doubt it given the amount of changes between 8.x and 9.x), I wouldn't trust it not to completely break your box (not that installing Plesk hasn't already done this for you anyway).

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Here is the Plesk License Update System. From here you should be able to upgrade the licnese key to the version that you need for the software that is installed.

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