I'm trying to connect R with an MS Access database on a Windows 7 64bit machine.
library(RODBC)
con <- odbcConnectAccess2007("M:/path/to/mydatabase/my.database.accdb")
# [RODBC] ERROR: state IM002, code 0, message [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specifiedODBC connection failed
I've also tried package odbc using connection strings specified at https://www.connectionstrings.com/access/ but similarly cannot connect
library(DBI)
con <- dbConnect(drv = odbc::odbc(), dsn = "Microsoft Access Driver", driver = "Microsoft Access Driver (*.mdb, *.accdb)", database = "M:/path/to/mydatabase/my.database.accdb")
# Error: nanodbc/nanodbc.cpp:950: IM002: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
What am I doing wrong?
You can use my AceOdbcCheck script to test your machine for a valid install of Access "ACE" ODBC. If you don't have it installed you can download the drivers here.
Note that the "bitness" (64-bit or 32-bit) of the Access ODBC driver must match the version of R you are running. That is, if you are running 32-bit R then you need the 32-bit drivers even though you are running 64-bit Windows.