Critical Information – Microsoft Update and ArcGIS (again)

A recent Microsoft update (deployed as KB 2732673, KB 2775511, or KB 2824408) may result in data corruption when using ArcGIS on a Windows 7 system and writing data to remote data storage on a Windows Vista, 7, 2008/2008 R2, or 2012 system. This data corruption appears as truncation of a write request and has shown up in file geodatabases and shapefiles.

Microsoft has acknowledged the problem, identified the affected component as RDBSS.sys, and provided
further details.

Esri and Microsoft are working closely to understand what has changed in the RDBSS.sys component and
how to resolve the problem.

Microsoft recommends not installing the above-referenced updates.

How Microsoft Made These Updates Available

KB 2732673 and KB 2824408 are hotfixes to address specific issues. The KB 2775511 update is a cumulative update that is available exclusively at Because it is available only through the Windows update catalog, the KB 2775511 update is not considered a security update by Microsoft and is not being deployed broadly.

What You Need to Do

  • If you have not yet installed the patches listed above, do not install them, per Microsoft’s recommendation.
  • If you have installed the patches listed above, Microsoft recommends uninstalling them until a solution
    is found.

See Esri Knowledge Base article 41119 for further information and updates.

See Microsoft Knowledge Base articles for more information on Microsoft updates:

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