Do not just copy DLLs. Use the official redistributable:
Microsoft no longer includes the RDLC designer in the default Visual Studio installation. You must add it as an extension: microsoft rdlc report designer 14.2 download
The is not a single file to download; it is a combination of a Visual Studio extension and a NuGet runtime package. Do not just copy DLLs
NuGet package or the internal versioning of the Report Designer extension for Visual Studio 2017/2019. 1. Download the Visual Studio Extension microsoft rdlc report designer 14.2 download
Download from the VS 2017/2019 Marketplace for older projects.
If you specifically need the redistributable (not the designer UI):
