LI-7000 USB Connection Issue on Windows 8

Printable PDF: LI-7000 USB Connection Issue on Windows 8

This content as a pdf that can be saved to your computer or printed.

Problem: The LI-7000 Windows Interface Software (V 2.0.1) can be installed on Windows® 8; the USB connection does not work, however, while the RS-232 connection does.

Cause: Windows 8 requires all drivers to be ‘signed’ before they can be installed. The USB driver of the LI-7000 Windows Interface Software is not signed, so Windows 8 does not allow its installation. The LI-7000 Windows Interface Software appears to install correctly, but the required USB driver is actually left out.

Solution: Install the new LI-7000 Windows Interface Software (V2.0.3). Version 2.0.3 has fixed this problem, along with a few other minor bugs, and can be downloaded from:

https://licor.app.boxenterprise.net/s/1aw06i7q54pgzmanmdr6

If you are not able to install this new software immediately, the Version 2.0.1 driver can be fixed by following these steps:

  1. Temporally disable driver signature enforcement on Windows 8 by selecting the following keys and choices in the resulting menus and windows:
    • Windows key + “C” (to get Charm Bar)
    • Settings
    • Change PC settings
    • General
    • Restart now (under Advanced Startup)
    • Troubleshoot
    • Advanced options
    • Startup Settings
    • Restart
    • “7” (Disable driver signature enforcement).
  3. Install the LI-7000 Windows Interface Software (V 2.0.1).
  4. Restart your computer to revert back to enabling driver signature enforcement.