office product key

Clarifications

Unless you are using Home & Student version of Office the product key is only licensed for 1 PC. Installing it on a second computer is considered a violation of the EULA, and software piracy. If you are using Home & Student you can install Office on up to 3 computers, the key should be on the original CD case. The only other scenario in which you can legally install the software on multiple computers is in business or academic environment that has purchased a Volume License from Microsoft. In that case you need to contact the IT administrator to see if they will allow you to use another CAL for a second computer, as Volume Licenses are also restricted as to the number of PCs they can be installed on, based on the number of purchased.

If you have lost those you can recover the key from the other computer with a product called Key Finder

http://tinyurl.com/b01p

That will give you the key to install Office but it will not give you the ability to Activate Office as if you do not have the correct version or a Multi License Version of Office when you attempt to activate Office the Activation Servers will refuse the activation and Black List that Product Key so that it will not work in the future when it comes time to activate on the original computer when a reload is required.

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