Troubleshooting
- Error when opening my book: "This format is no longer supported" (Windows/Mac)
- "Bookshelf" is not optimized for your Mac
- Printing Exceeded the Permitted Amount
- Where are my books?
- Bookshelf for PC - Invalid Signature or Corrupt Installer Error Message
- Highlight sync issues
- Windows: Black/Gray content shown instead of text
- Bookshelf Will Not Launch
- You have Reached your Machine Activation Limit
- Windows: Installation failure due to missing MSI file
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:
- Managing your activations from a browser
- Managing your activations from Bookshelf Desktop
- Managing your activations from Bookshelf for iPad, iPhone, or iPod Touch
- Managing your activations from Bookshelf for Android or 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 X 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