Hotfix for Server 2008 Issue Available
ByMicrosoft released a hotfix today that addresses an issue in the Server 2008 networking stack. Users of SBS 2008 may have seen the effects of this issue if networking services seemed to “hang” after the server had been running for 4-7 days and needed a restart to restore normal operations. The problem has manifested with certain software products attempting to access the impacted resource. One such application is Trend Worry-Free 5.1, but it is not the only application that has seen the issue. Note that third-party applications are not causing the issue, but third-party applications that attempt to access the problematic code are seeing the issue.
Microsoft has released a hotfix for this issue, but the KB article, KB961775, that describes the issue in detail is not yet available. The hotfix can be downloaded from http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=961775&kbln=en-us.
UPDATE: While the MS KB has not been made public yet, the SBS blog does have detailed information on this issue. Check out their blog post at: http://blogs.technet.com/sbs/archive/2009/02/12/you-may-lose-network-connectivity-on-sbs-2008-when-using-a-driver-which-utilizes-tdi.aspx.