Problem with checksum on Malicious Software Removal Tool v5.9 (x64)

Problem with checksum on Malicious Software Removal Tool v5.9 (x64)

I've tried several times to download the latest MS Malicious Software Removal Tool v5.9 (x64) through Service Desk 8 (Build 80339).  It downloads and the file size looks identical to the one I downloaded manually from microsoft.com, but I always see a "checksum doesn't match" error and the patch (ID = 15105) is still showing up as "Not yet downloaded" -- is this a known bug?  Is there a workaround, such as manually downloading the MRT into the proper store folder?  Thanks.

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