Hyper-V Hotfix for "0x00000101 - CLOCK_WATCHDOG_TIMEOUT" on Nehalem systems

Hyper-V Hotfix for "0x00000101 - CLOCK_WATCHDOG_TIMEOUT" on Nehalem systems

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We have just released a new hotfix for Windows Server 2008 R2 that address the issue that users were getting a bluescreen of death on Intel Xeon 5500 series processor-based computers with the following text:

0x00000101 (parameter1, 0000000000000000, parameter3, 000000000000000c)

You can download the hotfix from here: http://support.microsoft.com/kb/975530

For the curious, this issue is actually caused by a bug (or in Intel terms “erratum”) that causes these processors to generate spurious interrupts.  You can read about this in the latest Intel documentation for this process series: http://www.intel.com/assets/pdf/specupdate/321324.pdf


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  • We hit this within a few hours after installing Windows 2008R2 with Hyper-V Role the first time.

    Than we installed the hotfix but we got the exactly same bugcheck on the following day with hotfix applied. We now applied registry changed to disable ACPI-C2 / C3 and will see if the bluescreens comes again.

    The Intel specification update mention the C6 state instead of C2/C3 is this also disabled with the registry changes from the kb article?

    We are using an Intel Xeon 3450 processor, does the hotfix check for the processor id?

    The BugCheck has a different address

    0x00000101 (0x0000000000000019, 0x0000000000000000, 0xfffff88001e5d180, 0x0000000000000002)



  • This hotfix isn't helping. The 0x101 BSOD still happens on Intel Xeon 5500.

  • When I download the hotfix and try to extract the files, it fails. It appears the hotfix is corrupted.

    An error occurred while unzipping. One or more files were not successfully unzipped. The error code is 110

    It creates the Windows6.1-KB975530-v3-x64.msu 1kb in size. It doesnt prompt for a password.

  • We have installed the fix 975530, but it does not help us, we get the exact same dump every time we use VM's.

  • I have an open ticket with MS. They claimed the hotfix is being re-worked and will be released in a month or so. For now, use the workaround.

  • Ben,

    Just received anew Asus G73JH (i-7 processor, specifically 720m), and am experiencing the same problem. I have not yet tried the HotFix since this processor family is not listed. Would you expect this to apply to a 720m?


  • Read the HotFix, and noticed that it *does* include the I-7 [thats what I get for reading things at 5:00AM]...Requested and received the HotFix, but when I try to apply it, I get the dialog box "Does not Apply to your System" - W2k8R2 Standard x64.

    Definately at a loss here, especially since the reason I bought the machine was for virtual machines....

  • David -

    Have you applied the rollup hotfix that came out through Windows Update recently? (blogs.msdn.com/.../hyper-v-hotfix-rollup-now-available.aspx) If yes - then you already have this fix.



  • We've got a user getting a similar error running XP Mode in Windows 7 Professional 64-bit.  The similarities are there there (Windows 7/Server 2008 RS and Virtual PC/Hyper-V), so I'm curious if this is the same root issue.  Have there been any hotfixes that address this issue in Windows 7 with Virtual PC?

  • aparker_sia -

    This is the first report I have heard of it with Virtual PC.  Can you please contact Microsoft product support with the details?



  • I had this problem with 2K8 R2 on my Lenovo W510, and now it's rearing its ugly head on Windows 8.  Do you know if there's a hotfix for Windows 8 available?  Given that it's an Intel microcode bug specific to certain processros  I can see why it's not part of the baseline Windows 8 package, but it would be nice not to have my laptop bluescreen 3 or 4 times  a week.

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