Install Software Updates
Periodically, Parallels provides free software updates to improve Parallels Desktop.
By default, Parallels Desktop is configured to automatically check for and download available software updates once a week. When an update is available, Parallels Desktop prompts you to install it. Simply follow the onscreen instructions.
Adjust Software Update Settings
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- Click the Parallels icon in the menu bar and choose Preferences . Then click General .
 - Right-click the Parallels Desktop icon in the Dock and choose Preferences . Then click General .
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            To choose whether you want Parallels Desktop to download updates automatically, select or deselect
            
             Download updates automatically
            
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If you choose not to download updates automatically, Parallels Desktop notifies you when an update is available and asks whether you want to download it.
 
 
Check for an Update Manually
- Follow the instructions in step 1 above and then click Check Now . You can also choose Check for Updates from the Parallels Desktop application menu.