Microsoft Corp. last week urged Windows 7 beta testers to return their machines to the Windows Vista operating system before upgrading to the impending release-candidate version of the new software.

Windows 7 Release Candidate, the next milestone for the operating system, is expected to be available sometime next month.
In a post on its Engineering Windows 7 blog, Microsoft asked users to revert to Vista to ensure that their upgrade process is "something real-world customers will experience."

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