You have Reached your Machine Activation Limit

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About Machine Activation Limits

VitalSource Bookshelf allows for two computers and mobile devices activated at any given one time on your account. If you are activating a new computer or mobile device, and receive the error message: "You have Reached your Machine Activation Limit" you will need to deauthorize an older computer or mobile device in order to activate a new one.

Managing Machine Activation Limits

Device-specific instructions for managing activations are below if you do not know what platform you are on choose Managing your activations from a browser:

  1. Managing your activations from a browser
  2. Managing your activations from Bookshelf Desktop
  3. Managing your activations from Bookshelf for iPad, iPhone, or iPod Touch
  4. Managing your activations from Bookshelf for Android/Kindle Fire
 

Managing your activations from a browser:

  • Go to the VitalSource Account Center and sign in with your username and password.
  • In navigation bar, click on Devices 
  • Find the device you wish to disable and click on the Deactivate button
  • Sign into Bookshelf with your login credentials
 

Managing your activations from Bookshelf Desktop:

  • After receiving the Activation Error message in Bookshelf, click on the Help Me resolve this error link
  • Bookshelf will sign you into the VitalSource Account Center (requires Bookshelf 7.0 Mac and 7.2 Windows) 
  • In navigation bar, click on Devices 
  • Find the device you wish to disable and click on the Deactivate button
  • Click on the Back to Application button
  • Sign into Bookshelf with your login credentials
 

Managing your activations from Bookshelf for iPad, iPhone, or iPod Touch:

  • After receiving the Activation Error message in Bookshelf, tap on Ok in the dialog box
  • Bookshelf will open a pop-up and sign you into the VitalSource Account Center 
  • In navigation bar, click on Devices 
  • Find the device you wish to disable and click on the Deactivate button
  • Click on the button in the top left of the screen to return to Bookshelf and sign-in
 

Managing your activations from Bookshelf for Android/Kindle Fire:

  • After receiving the Activation Error message in Bookshelf, Tap on the Help button
  • A new browser window will open, and Bookshelf will sign you into the VitalSource Account Center
  • In navigation bar, click on Devices 
  • Find the device you wish to disable and click on the Deactivate button
  • Toggle back to Bookshelf
  • Tap the Close button to sign into Bookshelf 
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