This code means that a device did not load properly. There may be a problem in the device driver or not all the drivers were installed.
See Also
Repairing Disk Errors This Might Take Over an Hour to CompleteHow to Fix the Steam Disk Write ErrorHow do I troubleshoot Steam Fatal Error Code problem effectively?Steam Support :: Disconnected by VAC: You cannot play on secure serversSolution: First restart the computer. If this does not resolve the issue, check for any updated drivers. In some cases, this issue may also be resolved by 'Uninstalling' the device in Device Manager and going through the Add New Hardware Wizard in Control Panel.
Keywords
Error code 26 Windows is in the process of setting up this device
