3.3. Update within existing version: Add/remove individual program components
To install or remove individual program components, call up the Installer
installation routine via Windows Start menu -> Add/Remove programs.
![[Note]](https://webapi.partcommunity.com/service/help/latest/pages/jp/installation_ecatalogsolutions/doc/images/note.png) | Note |
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Locally changed configuration files remain available (sitesetup/cadenas_user). |
![[Note]](https://webapi.partcommunity.com/service/help/latest/pages/jp/installation_ecatalogsolutions/doc/images/note.png) | Note |
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An existing version is recognized and automatically updated. The old version is removed and the new version is copied in. |
Start the installer by clicking on Change.
-> The start screen appears. Click Next.
Click Change.
Activate or deactivate the desired product features.
Close the start screen.