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Driver not digitally signed -> (Code52)

Posted: Thu 9. Jun 2016, 11:28
by G.Lang
Since driver version 4.1 our drivers use the new microsoft driver model with a new signature and therefore it´s necessary to update the certificate store otherwise you get the "Code 52" warning at Win Vista/7 and 8.x
driver4_1_x.JPG (60.22 KiB) Viewed 438649 times
Solution 1:
Update your system


Solution 2:
Download driver version 4.0.18 from the following link -> and remove driver version 4.1.x.

Please follow the steps below

Uninstall the current driver version via right mouse click inside the device manager -> click "Remove" or "Uninstall"
remove_driver_1.JPG (68.4 KiB) Viewed 438649 times
and select "Remove the driver software for this device" (or similar)
remove_driver_2.JPG (25.45 KiB) Viewed 438649 times
and press "OK" and wait till the uninstall routine is finished, then reboot your PC and install driver version 4.0.18

For further infos or questions contact us via email ->

Driver not digitally signed -> (Code52) - ALSO on W10

Posted: Mon 5. Sep 2016, 17:05
by U.Wilhelm
Since the the last Windows 10 Update (Anniversary Update: Version 1607) on new PC´s with a new installed W10 1607,with UEFI BIOS and used Secure Boot, this error come up when you try to install our Device Drivers:
Windows cannot verify the digital signature for this drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from unknown source. (Code 52)
Signatur_01.JPG (54.36 KiB) Viewed 433201 times
If you run in this problem, please use the latest drivers which are signed by Microsoft:
Signatur_02.JPG (62.95 KiB) Viewed 433201 times
in our new PeakOemDrv.exe Driver Setup Package we have implemented allneeded drivers for all the differnt OS.
Thank´s to Microsoft for the Workload...