S 2.89 De-installation of standard software

Initiation responsibility: Head of IT section

Implementation responsibility: Head of IT Section, Administrator

In the de-installation of software, all files must be removed which have been created for the operation of the software on the IT system, and all entries in system files which were made in relation to the product must be deleted. With many software products, files are created during installation in various directories on the IT system or existing files are altered. Often the user is not even informed of all the changes on the IT system made during installation.

In order to be able to perform a complete de-installation, it is therefore helpful to sustain the system changes made during installation, either manually, or with the aid of special tools. If this is not done, experience shows that a de-installation only takes place in a rudimentary way or that it is not carried out for fear of deleting important files during de-installation.

Additional controls:

• Are random checks carried out to determine whether the previous version is completely de-installed when a version is changed?