![]() ![]() Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix. This hotfix might receive additional testing. Apply this hotfix only to systems that are experiencing the problem described in this article. However, this hotfix is intended to correct only the problem that is described in this article. Resolution Hotfix informationĪ supported hotfix is available from Microsoft. When the race condition occurs, the AHCI driver does not detect that some I/O requests are completed until the time-out handler collects these requests 60 seconds later. This behavior may lead to a race condition between the interrupt handler in the driver and the hardware device. This issue occurs because the AHCI driver (Msahci.sys) does not follow AHCI specifications to access related registers. Note The issue occurs frequently under heavy disk I/O conditions. ![]() This issue may affect Windows Explorer and any other application that performs I/O operations on the SATA/AHCI device. After this change takes effect, the computer randomly stops responding for 60 seconds or for longer. In the BIOS setup, you change the Serial Advanced Technology Attachment (SATA) mode of a disk device to use the Advanced Host Controller Interface (AHCI) specification. You have a computer that is running Windows Server 2008 R2 or Windows 7. ![]()
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