Support / Knowledge Base / Neo BSOD Windows bluescreen

Neo BSOD Windows bluescreen

The current release v9.3.62.0 (Rev E) Neo driver has a known bug that may result in a Windows BSOD (bluescreen).

Until a newer driver is released with the bug fix, at this time, there are 2 options for resolution:
 
1. Try the previous version Neo driver, v8.1.22.0 (Rev C1), as the known bug stated above was introduced in the newer driver.

http://ftp1.digi.com/support/driver/40002544_C1.zip

To downgrade the driver, first make note of the Neo COM port assignments in Device Manager, in the Ports category.  Next, uninstall the existing driver by going to Device Manager, making note of the Neo COM port numbers (in the Ports category), then MultiPortSerial category, right-click the Neo and Uninstall.  If there’s a checkbox to delete the driver, check it.  Reboot the computer afterwards then follow the normal instructions to install the older driver (extract the .zip file above and point the found new hardware wizard to that folder).  If needed, re-configure the COM port assignments to match the older installation.

2. Try a newer beta Neo driver (Rev E1) that has the bug fix.  Because this driver has not yet been digitally signatured (WHQL “signed”) by Microsoft, special instructions must be followed, to temporarily disable Windows Driver Signature Enforcement, in order for the driver to install.

Below is the download link and installation information for the newer beta driver.

ftp://jmcbane_ro:1readonly!@digiftp.digi.com/Neo/40002544_E1.zip

Installation instructions:

1. Make note of the Neo COM port assignments in Device Manager, in the Ports category.

2. Uninstall existing Neo driver by going into Device Manager, expand the MultiPortSerial category, right-click the Neo and Uninstall.  If there’s a checkbox to delete the driver, check it.  If prompted to reboot, do not reboot yet.

3. Launch an elevated command prompt (“Run as Administrator”) then issue the following command:  bcdedit /set TESTSIGNING ON

4. Reboot the computer.

5. Save the above .zip file somewhere then extract it.

6. Locate the Neo in Device Manager.  Right-click / Update Driver and browse to where the .zip file was extracted.

7. If needed, re-configure the COM port assignments to match the older installation.

Note that you will see TEST MODE at the bottom-right of the Windows desktop, because of the bcdedit command, which simply disables driver signature enforcement (it allows Windows to install “unsigned” drivers).  The command “bcdedit /set TESTSIGNING OFF” will undo this (after rebooting the computer), if needed, any time in the future, i.e. if you want to install the newer official Neo driver once it’s released.

Last updated: Aug 08, 2017

Recently Viewed Articles

No recently viewed articles
Contact a Digi expert and get started today! Contact Us