= Windows Installer Cleanup Instructions for version 6 =

[[T(VersionSix)]]

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== Introduction ==

This document describes how to cleanup a machine so that it'll appear to be a clean machine to future 6.x client installs.

This document assumes that you were able to successfully uninstall BOINC via the add/remove control panel applet.

In addition to the information stored via normal MSI operations the BOINC installer makes the following additional changes depending on the options selected during install:
 * Creates two additional user accounts
 * Creates three local user groups
 * Assigns user rights to newly created users
 * Stores setup information to the registry
 * Migrates existing data from the installation directory to the data directory

== Cleanup Users and Groups ==

To cleanup the newly created users and groups do the following:
 * Click on the 'Start' button.
 * Right-click on 'My Computer' and select 'Manage'.
 * Expand the 'Local Users and Groups' tree node.
 * Click on the Groups tree node.
 * Delete the 'boinc_admins' group.
 * Delete the 'boinc_users' group.
 * Delete the 'boinc_projects' group.
 * Click on the Users tree node.
 * Delete the 'boinc_master' user account.
 * Delete the 'boinc_project' user account.

== Cleanup User Rights Assignments ==

To cleanup the newly assigned user rights do the following:
 * Click on the 'Start' button.
 * Click on 'Control Panel'.
 * Launch the 'Administrative Tools' control panel applet.
 * Launch the 'Local Security Policy' application.
 * Expand the 'Local Policies' tree node.
 * Click on the 'User Rights Assignment' node.

Open each user right that contains an '*S-' style entry, and remove each entry that begins with '*S-'. Each '*S-' entry represents a user account that has been deleted from the system.

== Cleanup Setup Registry Entries ==

To cleanup the newly created registry entries do the following:
 * Launch 'regedit.exe' from the Start\Run menu item.
 * Expand the 'HKEY_LOCAL_MACHINE' entry.
 * Expand the 'Software' entry.
 * Expand the 'Space Sciences Laboratory, U.C. Berkeley' entry.
 * Delete the 'BOINC Setup' entry.

== Cleanup Migration of Data Files ==

Move all data files back into your installation directory from your newly created data directory.

== Conclusion ==

After performing all the actions your machine should appear to be a clean install to future attempts to execute v6 installers.