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i have followed these steps to install Access Database Engine, configure the ODBC data source and create a user DSN abc linked to abc.mdb: https://stackoverflow.com/questions/6721702/windows-7-64-bit-odbc-drivers-for-ms-access-missing and How to read data from Microsoft Access .accdb database files into R?
No issues.
However, odbcConnect(“abc”) is giving me this error: The specified DSN contains an architecture mismatch between the Driver and Application
This issue is with regards to 32bit v 64 bit i think. Is your R 32 bit or 64 bit. It is likely you created a 32 bit DSN.
c:\windows\sysWOW64\odbcad32.exewill create a 64 bit version. By default control panel points to%windir%\system32\odbcad32.exewhich would be the 32bit version