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Vista 64 bit OS did not accept the driver for the USB to DB25 parallel cable. Message says the driver must have a digital signature.

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Until a new version for 64-bit Vista comes out, there are two workarounds:
1. Boot Windows holding down the F8 key and select “Disable driver signature enforcement”. This will let you install unsigned drivers for that session.
2. Run cmd.exe as an administrator (right-click it to do this) and then type:
bcdedit -set loadoptions DDISABLE_INTEGRITY_CHECKS

post again if you have problems.--------- Please rate this solution.---------

Posted on Oct 11, 2008

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Please can you clarify exactly which OS you have. Is it 32 bit or 64 bit? You will almost certainly have the 32-bit version and need to go to the appropriate page. 64-bit drivers will not work with 32-bit Os's and vice versa.

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RS-25 & RS-27 Foot Pedal not working with Vista x64


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My printer Lexmark z23 , I am unable to install it with vista O S .


check if you have the 32 bit vista or a 64 bit vista os.
if you have the 64 bit vista on the computer try to install a 64 bit vista compatible printer driver to make it work.

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1 Answer

I ve just bought lexmark z2300 printer, how do i connect it to my laptop which is on wireless broadband with perlico? ta caroline.


You need to connect the printer with an extra cable which can join it through its 25 pin parallel cable. That cable then with USB end connect with the Laptop. and its drivers can be automatically detect by your Vista system.
For Vista 64-bit, the driver for printer and cable should be digitally signed.
Otherwise you need this method for Driver Installation in Windows Vista 64-bit:
The 64-bit version of Windows Vista is the first version of Windows that will only allow signed drivers and this restriction is built-in. For most cable drivers are unsigned and we request you to follow some prerequisites before installing the driver.
Preparing Vista 64-bit for Driver installation:
  • Using the F8 option: Press F8 key on your keyboard while booting your PC. You will get into “Advanced Boot Options”. Select “Disable Driver Signature Enforcement”
  • An F8 Advanced Boot Option introduced with Windows Vista—“Disable Driver Signature Enforcement”—is available to disable the kernel-signing enforcement only for the current boot session. This setting does not persist across boot sessions.
  • Note: Make sure to use F8 option every time you boot/reboot your PC before start working with MCS77XX.
  • Make sure that the User installing the driver must be a member of the Administrator group on the system. 
And for printer driver if you dont have CD then go through this link and follow the steps:
http://www.fixya.com/support/r1133275-drivers_installation_problem

Let me know if you need furhter assistance, I will help you to run your Printer with Laptop.

Regards,
Ellin

Oct 16, 2008 | PC Desktops

1 Answer

Vista 64 bit OS says I must get a driver with a digital signature to install USB to DB25 parallel cable. The driver on the disc which came with the cable was not accepted by Vista.


1. Get a new signed driver from the adapter manufacturer.
2. Try the workarounds listed here: http://www.mydigitallife.info/2007/08/15/workaround-for-vista-cannot-load-low-level-driver-signing-issue/

For what it is worth, I generally found USB to parallel adapters worthless as most printers will not work with the adapter. Usually easier to get a new printer. If a desktop, get a parallel port expansion card.

Oct 11, 2008 | PC Desktops

5 Answers

I have a Roland Camm-1 CX-24 cutting machine that has a parallel connection. I have recently bought a Dell Inspiron 1720 with a Windows Vista OS. I have a USB to Parallel cable to connect the two. I have...


connect the printer and the comp. and boot up....windows should recognize the new device.
did you add the plotter to "add printers" and its driver and to the correct port?
make sure your plotter is on and loaded and function key pressed.
also some cable manufacturers supply a driver...so download one if need be.
what software are you using? is the software cutter driver set to the correct printer and port?
(by default it never is)!!

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Need to program mac pro to accept HPlazerjet 4 printer. Bought USB to DB25 parallel cable and cannot use the 3" disc it comes with. Can ou help


Greetings,

First check from the System Profiler if the HP Printer is detected.

Download the Mac driver for your printer here

Keep us posted and thank you for using our service.
FixYa - Technical Support, Instructions & Repair Service

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