# Update or Reinstall a Version of TERR

When you update to a more recent version of TERR, remove the previous version, and follow the guidelines to protect your installed packages.

Warning:

Installing TERR over a previous TERR installation without removing it can cause unexpected failures. To remove TERR, follow the instructions for your operating system.

Note: For a list of operating systems that TERR is supported on, see the Spotfire Enterprise Runtime for R system requirements.

When you update to a new version of TERR, follow the guidance in "Package installation locations and recommendations for updating" in the Package Management section of the Spotfire® Enterprise Runtime for R Technical Documentation.

## On Linux

- From the command line, run the command `rm -rf TERR_HOME`, where `TERR_HOME` is the installation directory.

## On Windows

- From the Settings app, click Apps, and then from the Apps & features list, double-click run the listing Spotfire Enterprise Runtime for R <version#>.

After uninstalling TERR, run the installer for the version of TERR you want to install.