1. Log into the computer as a Windows user with Local Administrator rights.
  2. Open the Windows Control Panel
  3. Select Uninstall a Program, or open Programs and Features
  4. Locate the Citrix Receiver or Citrix Online Plugin application in the list of installed programs.
  5. Right-click on the entry in the list and select Uninstall.
  6. Download and install the Citrix Receiver if you need to reinstall it. 

Mac OSX:

  1. Download Citrix Receiver from Blackbaud's website
  2. Open the CitrixReceiver.dmg file
  3. Select Uninstall Citrix Receiver.
  4. Follow the prompts to uninstall.