I guess that’s why KB983246 suggests Office 2010 64 bit, since Office is one of the most common ADO programs on a 64 bit computer, and 64 bit Office would be more likely to be automated from 32bit COM client than other 64 bit programs. This does not adhere to the COM interface protocol as the interface used by old applications is still thinking the parameter type is LONG. Some methods’ parameters use a ADO_LONG data type whose meaning got changed to the 64bit LONGLONG on 64 bit machines.
This is caused by a problem in the old ADO type library regarding the ADO_LONG data type. Update: please refer to the knowledge base article kb2517589 An ADO application that is re-compiled on a Windows 7 Service Pack 1-based computer does not run on down-level operating systems for walkarounds.Īfter installing Windows 7 SP1, which shipps with msado15.dll version.17514, your ADO program may no longer work on a computer without KB983246 (msado15.dll .20701). New programs are encouraged to use the KB983246 version of type library when they no longer need to support computers without KB983246. Those who recompiled with the KB983246 version either need to roll out KB983246 to customer computers or switch back to the old type libraries. Update2: Microsoft fixed the issue in Windows 8 in a way that old programs would work without change.
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