It is often located at C:\Program Files (x86)\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Common\SAP BusinessObjects Enterprise XI 4.0\win32_x86 (or win64_x64 for 64-bit systems).
If the file is simply in the wrong directory, you can manually copy it to the location where the application expects to find it. download crdb_adoplus.dll
Some older applications look for the file in a subfolder named dotnet1 . You may need to create this folder inside your bin directory and place the DLL there. 3. Update Configuration for .NET 4.0+ It is often located at C:\Program Files (x86)\SAP