https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37369#M1890 Dorian - I am using a trial license for the ESX server and it expired yesterday. I have solved the problem now. Just in case others run into this, the instructions in <A href="http://www.vmwarearena.com/2013/10/vsphere-55-download-free-esxi-55.html" target="_blank" rel="nofollow noreferrer noopener">http://www.vmwarearena.com/2013/10/vsphere-55-download-free-esxi-55.html</A> should help solve it. Tue, 12 May 2015 20:38:00 GMT Chandrasekaran_ 2015-05-12T20:38:00Z https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37367#M1888 When I power on my virtual machine on the ESXi server, I get an error message "License key has expired. Please install a valid license to use this product". Could you help me here? The license expired on 5/11/2015. (This is for the EXTR-ONE controller) Tue, 12 May 2015 16:22:00 GMT https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37367#M1888 Chandrasekaran_ 2015-05-12T16:22:00Z https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37368#M1889 Hi,<BR /> <BR /> Please email details to licensing@extremenetworks.com for assistance. Tue, 12 May 2015 19:53:00 GMT https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37368#M1889 Dorian_Perry 2015-05-12T19:53:00Z https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37369#M1890 Dorian - I am using a trial license for the ESX server and it expired yesterday. I have solved the problem now. Just in case others run into this, the instructions in <A href="http://www.vmwarearena.com/2013/10/vsphere-55-download-free-esxi-55.html" target="_blank" rel="nofollow noreferrer noopener">http://www.vmwarearena.com/2013/10/vsphere-55-download-free-esxi-55.html</A> should help solve it. Tue, 12 May 2015 20:38:00 GMT https://community.extremenetworks.com/t5/extremewireless-general/license-key-expired-for-extremeone/m-p/37369#M1890 Chandrasekaran_ 2015-05-12T20:38:00Z