Error:

Run-time error 3709: The connection cannot be used to perform this operation. It is either closed or invalid in this context.

Snapshot:

Workaround 1: Unregister and Re-register the DAO350.dll using Regsvr32.

  1. Open Command prompt as Administrator
  2. Type Regsvr32 /u “C:\Program Files\Common Files\Microsoft Shared\DAO\DAO350.DLL”.
  3. Click enter to unregister.
  4. Type Regsvr32 /u “C:\Program Files\Common Files\Microsoft Shared\DAO\DAO350.DLL”.
  5. Click enter to register it.

Workaround 2: Run the application always as administrator.

Right click the Application shortcut and Go to Properties set Run as Administrator.

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