(VCL) I am getting ‘Error: Unresolved external Cert...’ when linking the project with C++Builder

The error means that Crypt32.lib is not linked to your project. To add Crypt32.lib, do the following:

  1. Close C++Builder IDE (or Borland Developer Studio IDE, if you use it)
  2. Open the BPR file of your project in plain text editor (notepad is OK)
  3. Find the line
  4. ALLLIB value="..."

  5. This line includes the list of the libraries to be linked. Add "crypt32.lib" (without quotes) to the end of this list.
  6. Save the project and reopen the IDE.

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