Security Device Not Found Please Attach Your Dongle And Restart The Software Upd Now

Troubleshooting "Security Device Not Found" Errors The error message

"Security device not found: Please attach your dongle and restart the software"

typically occurs when a program protected by a hardware-based licensing system (a ) cannot communicate with its security key

. This is a common security measure in high-value industries like CAD, embroidery, and media production. 1. Root Causes of the Error This error generally stems from one of three areas: Hardware Connectivity

: The physical USB dongle is missing, loose, or plugged into a faulty port. Driver Failure

: The software that translates commands between the dongle and the computer (often drivers) is missing, outdated, or corrupted. Conflict with Security Software

: Antivirus or firewall programs may block the communication services (like hasplms.exe ) that the dongle requires to function. 2. Step-by-Step Resolution Guide

Follow these steps in order to resolve most dongle-related failures: Resolving Security Device (USB) Issues (Dongle)

Feature spec: "Security device not found — attach dongle and restart"

Preventive Maintenance

To avoid this nightmare in the future:

Never force-remove a dongle while software is running. Use "Safely Remove Hardware."
Back up your dongle definition file (.hasp, .c2v, or .WibuCmRaid) if your vendor allows it.
Keep a dedicated USB port for your dongle and label it.
Update dongle drivers quarterly even if no error occurs.

The "security device not found" error is infuriating but almost always solvable. By methodically working through physical connections, driver stacks, Windows services, and security permissions, you will have your software updater recognizing the dongle and completing the license check. Patience and a systematic approach are your best tools—along with a backup dongle, if your vendor offers one.

Troubleshooting the "Security Device Not Found" Error If you are staring at a popup that says "Security Device Not Found: Please attach your dongle and restart the software," you’re likely dealing with a specialized piece of hardware-locked software. Whether you are using CAD tools, video editing suites, or industrial controllers, this error is a classic "handshake" failure between your computer and your physical security key (dongle).

Here is a step-by-step guide to getting your software back up and running. 1. The Physical Check (The "Is it Plugged In?" Phase) It sounds obvious, but dongles are sensitive. Troubleshooting "Security Device Not Found" Errors The error

Re-seat the Device: Unplug the dongle, wait five seconds, and plug it back into a different USB port.

Check the Light: Most modern dongles (like HASP, Sentinel, or Wibu-Key) have an internal LED. If there is no light, the port may not be providing power, or the dongle itself may be dead.

Avoid USB Hubs: Security dongles often fail when plugged into unpowered USB hubs or keyboard passthrough ports. Plug the device directly into the motherboard/laptop chassis. 2. Update or Reinstall Drivers

The most common culprit is a corrupted or outdated driver. Windows updates can occasionally "break" the communication path between the software and the dongle.

Identify the Brand: Look at the physical dongle. It likely says Sentinel, HASP, SafeNet, or Wibu-Key.

Download the Latest Runtime: Go to the manufacturer’s website (e.g., Thales for Sentinel/HASP) and download the latest "LDK Runtime" or "GUI Setup."

Clean Install: Uninstall the existing driver from the Device Manager, restart, and then install the fresh driver before plugging the dongle back in. 3. Check for Service Interference

Many dongles rely on a background service (like Sentinel LDK License Manager or Wibu-Key Server) to function. If this service isn't running, the software won't see the key. Press Win + R, type services.msc, and hit Enter.

Look for any service related to your dongle (e.g., "Sentinel Local License Manager").

Right-click it and select Restart. Ensure the "Startup Type" is set to Automatic. 4. Antivirus and Firewall Exceptions

Some aggressive security suites flag dongle drivers as "low-level system threats" because they interact directly with hardware ports. Never force-remove a dongle while software is running

Temporarily disable your antivirus to see if the software launches.

If it does, add the software's installation folder and the dongle driver folder to your Exclusion List. 5. Check for Virtual Machine Conflicts

If you are running your software inside a Virtual Machine (VM) like VirtualBox or VMware, the host machine usually "claims" the USB port first. You must manually "pass through" the USB device to the guest OS in the VM settings for the software to recognize it. When to Contact Support

If you’ve tried the above and the LED on the dongle still won't light up on any computer, the hardware has likely failed. Most software vendors will replace a broken dongle for a small shipping fee, provided you can return the defective unit.

Pro-Tip: Never lose that dongle! Most companies treat a lost dongle as a lost license, meaning you might have to buy the entire software suite again at full price.

To help me give you more specific instructions, could you tell me: What software are you trying to open? What brand is printed on the physical USB dongle?

Is the LED light on the dongle currently glowing or flashing?

The error message " Security device not found. Please attach your dongle and restart the software typically occurs when high-end professional software (like Wilcom Embroidery Avid Media Composer

) cannot find the required physical USB security key (dongle) needed to verify your license Since you mentioned "upd," it’s likely you are trying to your software or the dongle itself has a license update Quick Fixes Re-seat the Dongle

: Unplug the USB dongle, wait 10 seconds, and plug it back into a different physical USB port. Bypass USB Hubs

: Connect the dongle directly to the computer’s motherboard ports (usually on the back) rather than a USB hub or extension, as hubs often don't provide enough power. Check the LED The "security device not found" error is infuriating

: Most security dongles have a light. if it’s off or flashing red, the device isn't receiving power or has a driver issue. Advanced Troubleshooting If a simple restart doesn't work, try these steps: Update the Sentinel/HASP Driver : Most dongles use Sentinel HASP

drivers. If you recently updated your OS, the old driver might be blocked. You can often download the latest Sentinel LDK Run-time to fix communication issues. Check Windows Services services.msc , and hit Enter. Sentinel LDK License Manager HASP Loader

Ensure the status is "Running." If not, right-click and select Disable Power Saving : Windows may be turning off the USB port to save energy. Device Manager Universal Serial Bus controllers Right-click your USB Root Hub > Properties Power Management

Uncheck "Allow the computer to turn off this device to save power". Update Dongle License

: If you just upgraded the software, your physical dongle might need a firmware "refresh." Look for a Dongle Manager License Update

tool within your software's installation folder to apply any pending updates. Which software are you specifically trying to update?

Knowing the name can help pinpoint the exact driver you need. Resolving Security Device (USB) Issues (Dongle)

Part 1: What Is This "Security Device" and "Dongle"?

Before fixing the problem, it helps to understand the components involved.

The Dongle: A small USB device (often red, blue, or green, sometimes looking like a miniature flash drive). It contains a microchip with an encrypted license. When you bought expensive professional software, you paid for a license stored on this physical key.
The Security Device: The "security device" is the internal logic within the dongle that cryptographically signs requests from the software. The computer sees it as a generic HID (Human Interface Device) or smart card reader.
The Software Updater: The updater is a module (often a background service like PACE License Support or CodeMeter Runtime) that checks for the dongle before allowing an update to install. If the updater runs and doesn’t see the dongle, it throws the error to prevent unlicensed updates.

Why do companies use this? This system allows you to move the license between computers by physically moving the USB stick. However, it also introduces a single point of failure: the USB connection.

Step 3: Disable USB Selective Suspend

Windows often cuts power to USB ports to save energy. This kills dongle communication.

Open Control Panel > Power Options.
Click Change plan settings > Change advanced power settings.
Scroll to USB settings > USB selective suspend setting.
Set to Disabled.
Reboot.

Step 3: The System Report Check (macOS)

Click the Apple logo > About This Mac > System Report.
Under Hardware, select USB.
Look for your dongle in the device tree. If it doesn't appear, the problem is hardware-based.