If the installation finishes successfully, you can remove the update installer from your hard disk.In the Microsoft Lync for Mac 2011 Update volume window, double-click the Lync for Mac 2011 Update application to start the update process, and then follow the instructions on the screen.This step might have been performed for you. Double-click the file that you downloaded in step 5 to place the Microsoft Lync for Mac 2011 Update volume on your desktop, and then double-click the volume to open it.To check your preferences, on the Safari menu, click Preferences, and then click General.
If you are using Safari, the downloaded file is saved to the desktop unless you specified a different location in the Preferences dialog box of Safari.