I am a University teacher and I have been provided with copies of Windows 7 and MS office 2010. Due to some problem I reinstalled Windows 7 and the Microsoft Office 2010 again but it is surprise for me that  I am unable to get MS Office 2010 activated on my three computers including two Laptops and one Desktop (On which I have installed Windows 8).  The message I receive:

Your installation can not be activated because you have activated up to the limit of your Multiple Activation Key. Consult your administrator for further help.

Please help me.

Hi Daud,

For such situation, we'd recommend you to make a call to the the Product Activation Center to obtain help of a customer service representative to activate the product.

To activate your product over the telephone, use one of the following numbers:

• Microsoft Office activation (United States only): (888) 652-2342
• TTY number: (800) 718-1599

For international customer, find the telephone number from the following support article:

http://support.microsoft.com/kb/9509

Hi.

Thank you for your response.