Critical Information Regarding Microsoft Update and ArcGIS
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
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.
See Esri Knowledge Base article 41119 for further information and updates.