Hi @MichalHadraba--3751,
For your requirement, you could try the following steps to create new project configurations for x64 platform:
- On the menu bar, choose Build > Configuration Manager.
- Select a project in the Project column.
- In the Configuration drop-down list for that project, choose New.
- The New Project Configuration dialog box opens.
- In the Name box, enter a name for the new configuration.
- To use the property settings from an existing project configuration, in the Copy settings from drop-down list, choose a configuration.
- To create a solution-wide configuration at the same time, select the Create new solution configuration check box.
- If the answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Sincerely,
Anna