What's the difference between retail symbols and checked symbols?

In general, the difference between "retail" and "checked" is similar to a "release" versus "debug" build. Microsoft provides two different kernels, one compiled for regular use and one with extra debug information. The two different builds also have two different symbol tables.

If you are an IT or Computer Science student in college (or if you happen to have access to MSDN's e-Academy software), you will probably have access to the special debug/checked builds of Windows Vista/7. Some professionals in the software development and engineering industries may have installations of the special debug builds as well. Otherwise, whether you come across Home or Professional editions--even Enterprise and Business editions--it will most likely be the retail version.

All of those versions will require the retail version of the debugging symbols. However, if you have a debug/checked build of Windows installed, you will need the checked debug symbols.

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