Fix for Ubisoft UPlay bug: Unable to update Assasin’s Creed IV

Running UPlay as admin as others have suggested did not solve this for me.  Neither did changing the install cache location as others have suggested.  Here’s what DID work for me:

  1.  Exit UPlay.
  2. Manually delete the following two files:
    • c:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\data\273\uplay_install.state
    • c:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\data\273\uplay_install_tmp.manifest
  3. Launch UPlay.
  4. Click the drop-arrow next to the PLAY/DOWNLOAD button on AC IV and choose “Verify Game Files”.
  5. Once verification is done, the issue should be fixed and you should now be able to successfully update.

This appears to be caused by a bug in the UPlay app.

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