Microsoft has rolled out a couple of hotfixes for the Windows 10 Technical Preview build 10049 tonight. Between the two, the hotfixes address an issue preventing users from enabling Hyper-V after installing build 10049, as well as an issue with Outlook preventing the client from indexing new emails.
Here's the full description of the issues each update corrects.
If you're running Windows 10 build 10049, you should be able to snag the above hotfixes from Windows Update now.
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