PLEASE NOTE: This issue has been addressed in the latest build of Enterprise Single Sign-On, version 8.0.6 SP6, which can be downloaded here:
Enterprise Single Sign-On - Download New Releases.
WORKAROUND
1. For version 8.0.3 SP3 and above:
In these versions ssoengine.exe is not affected but SSO may not start if it is launched by the CredentialManager. A workaround to the problem on workstations is to apply the following configuration in the registry:
[HKEY_LOCAL_MACHINE\SOFTWARE\ Enatel\WiseGuard\AdvancedLogin]
StartSSOEngine: dword:00000001
2. For all other versions and for a global workaround including the ESSO console and Enterprise Studio, the workaround is to disable Windows UAC. This can be done through the control panel, via the registry or via Group Policy.
To turn off UAC in Control Panel:
- Open Control Panel and select "User Accounts".
- Select "Change User Account Control settings":
- Set the control to "Never notify" then click OK. This will require a restart of the system.
Windows 7:
Windows Server 2008:
To turn off UAC in the registry:
- Change following value from 1 to 0:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
EnableLUA=dword:00000000
Note: To be effective a restart of the system is required.
To turn off UAC using Group Policy:
1. Run Group Policy Management Console for AD-based domain GPO editor. Browse to the required GPO which is linked to the domain or OU where the policy wants to apply.
2. Navigate to the following tree branch:
Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options
3. Locate the following policy in the right pane:
User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode
Set its value to "Elevate without prompt".
4. Locate the following policy in the right pane:
User Account Control: Detect application installations and prompt for elevation
Set its value to Disabled.
5. Locate the following policy in the right pane:
User Account Control: Run all administrators in Admin Approval Mode
Set its value to Disabled.
6. Locate the following policy in the right pane:
User Account Control: Only elevate UIAccess applications that are installed in secure locations
Set its value to Disabled.
7. Systems must be restarted for the change to take effect.

STATUS
This issue has been addressed in the latest build of Enterprise Single Sign-On, version 8.0.6 SP6, which can be downloaded here:
Enterprise Single Sign-On - Download New Releases