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Unable to install 64-bit Guest OS in VMWare Server

Posted on 2009-04-02
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Last Modified: 2012-05-06
I'm attempting to install a VM of Windows Server 2003 Standard x64.

However, when I try to do so I get the following message:

"Attempting to load an x64 operating system, however this CPU is not compatible with x64 mode. Please install a 32-bit x86 operating system.

Setup cannot continue. Press any key to exit."



The server has a 64-bit CPU and OS so I'm not really sure where to go from here. I've read that this can have to do with the way VT is setup in the BIOS but it doesn't really explain what I need to do.


Can anybody provide any guidance? Thanks in advance.
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Question by:SysAdminWVU
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Expert Comment

by:Kevin Pham
ID: 24052463
When you create the vmware guest, you might have specified in the wizard "Windows 2003" (without 64bit).
That's the only thing I can think of....
Even with a 32-bit CPU, you can still install 64-bit guest OS if you specified so when you create the virtual machine. I've done x86_64 Redhat 5 guest OS, on my 32-bit laptop.
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by:SysAdminWVU
ID: 24052520
Nope, I picked Windows Server 2003 Standard x64 Edition which is exactly what I'm trying to install. Thanks for the quick reply though, I appreciate it.
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Accepted Solution

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SysAdminWVU earned 0 total points
ID: 24052591
I figured it out...the BIOS setting was called Intel Virtualization Technology that had to be enabled in the CPU settings of the BIOS.
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