We strongly recommend that you don't keep the old Data Studio version when upgrading to a newer one.
The recommended upgrade process consists of three parts:
- Backing up your current Data Studio repository.
- Uninstalling the old version.
- Installing the new one (run the executable as an administrator). 
Back up your repository
Note that this may take some time.
- Stop the service:
- Search for services from the start menu or go to Control Panel > System and Security > Administrative Tools > Services.
- Locate the Experian Aperture Data Studio Database Server service.
- Right-click on the service and select Stop.
 
- Back up:
Copy and save the following files/folders to a separate location:
- The Aperture Data Studio folder (by default, C:\ApertureDataStudio). This contains all your data, workflows and caches. You can choose to back up individual sub-folders as well: 
- import (if you have any files imported)
- content (if you're using auto data tagging)
- drivers (if you're using any custom JDBC drivers)
- if you have snapshots: copy all the required ones (by default, C:\ApertureDataStudio\data\resource\table\workflow\`{UUID}_{Snapshot Name}`)
- sampledata folder (if you use sample data or tutorials).
 
- Server properties file (by default, C:\Program Files\Experian\Aperture Data Studio {version}\server.properties). This contains all your settings defined in Configuration.
- Filedatastores properties file (by default, C:\Program Files\Experian\Aperture Data Studio {version}\filedatastores.properties). Back this up if you have set up any data stores, use sample data or tutorials.
- workflowTriggers.json file (by default, C:\Program Files\Experian\Aperture Data Studio {version}\workflowTriggers.json). Back this up if you have any workflow triggers defined.
- Virtual Machine Parameters={memory usage} setting, if not using the default JVM setting (by default, C:\Program Files\Experian\Aperture Data Studio {version}\Aperture Data Studio Service 64bit.ini).
- If you have custom steps:
- addons folder (by default, C:\Program Files\Experian\Aperture Data Studio {version}\addons)
 
- If you are licensed for Experian Batch:
- License key file (by default, C:\ProgramData\Experian\batchkeys.ini)
- Qawserve file (by default, C:\ProgramData\Experian\addressValidate\runtime\qawserve.ini)
- Qaworld file (by default, C:\ProgramData\Experian\addressValidate\runtime\qaworld.ini)
 
 
Uninstall the old version
- Search for remove program from the start menu or go to Control Panel > Programs > Programs and Features.
- Find Experian Aperture Data Studio.
- Right-click, select Uninstall, then click Yes.  
The uninstaller will delete:
- C:\ProgramData\Experian\addressValidate
- C:\Program Files\Experian\Aperture Data Studio {version}(includes custom steps, server settings, custom drivers, etc.)
The uninstaller will not touch:
- C:\ProgramData\Experian (licenses for Data Studio and Experian Batch, might also contain other Experian files).
- C:\ApertureDataStudio (contains workflows, users, import folders, etc.)
Install the new version
- Stop the service, and replace the mandatory files noted above. Restart the service. - Note that it's not necessary to replace the repository itself if you are using it in the default location. 
- (optional) If your server had been configured to use a repository in a non-standard location: - 
- Stop the service
- Delete the newly created C:\ApertureDataStudio
- Replace your backed-up repository and server.properties file in their old locations
- Restart the service
 
- Install the new version as usual. Get the latest Data Studio version. 
Clean install
If you want to install a new version on a machine that has/had Data Studio installed:
- Uninstall any remaining instances of Data Studio.
- Manually delete C:\ProgramData\Experian and C:\ApertureDataStudio.Note that this will remove your existing license. 
- Install a new version as usual.