Occasionally, the Symphony entry in Program and Features becomes a residual entry which you cannot remove using the 'uninstall' option (Figure 1):
Figure 1 Uninstall Error
To successfully remove this version of Symphony and allow a newer install to be completed, or to perform regular housekeeping on your machine, open the Registry Editor from the Start menu (Figure 2):
Figure 2 Registry Editor
Navigate to the following URL and remove the Symphony x.x.x folder (Figure 3):
Figure 3 Symphony Registry Path
The residual version of Symphony will be removed from your machine.
Note: If you have an entry for an obsolete Symphony desktop client, navigate to the following link and remove it