Uninstalling Incorrect Usb Device Drivers Microchip

Summary

DEVELOPMENT SYSTEMS
Uninstalling Incorrect USB Device Drivers
RECOMMENDED UNINSTALL METHODS
When using Microchip development tools, trouble may be experienced as a result of
incorrect device drivers being installed

If the Windows® OS installs its default USB device drivers for a Microchip development
tool, the tool will not function properly, if at all. To uninstall the Windows drivers and
install the necessary Microchip drivers, follow the instructions listed in this document

It is recommended that the simple uninstall is attempted first. If this does not work,
proceed to the complex uninstall

• Simple Uninstall Method – Delete from Device Manager
• Complex Uninstall Method – Edit Registry
• Installation Issues – Solving problems when installing the drivers
Note: If you have installed the drivers and been able to communicate without
errors initially, but then have experienced communication problems,
reinstalling the drivers may not solve your problems. Please refer to the
MPLAB® ICD 2 on-line help for possible software solutions before
attempting to uninstall/reinstall the drivers

SIMPLE UNINSTALL METHOD
Attempt this method first. If it does not work, proceed to the complex uninstall

First remove the reference to the USB device from the Device Manager. Then install
the correct Microchip USB device drivers

Removing the Incorrect USB Drivers
At this time, the PC system should be booted up and idle. Also, the development tool
should be plugged into a PC USB port

1. Right-click (right mouse button) on the My Computer icon on the PC desktop

Select Properties to bring up the System Properties dialog

2. Open the Device Manager

• For Windows 98/ME: Click on the Device Manager tab

• For Windows 2000/XP: Click on the Hardware tab and then click on the
Device Manager button to open the Device Manager window

3. Click on the “+” to expand either Other Devices or USB Ports and find a “?” with
a yellow “!” or red “X” through it. It should say “USB Device” or something similar

Note: If unsure which device under Other Devices is the tool being used, unplug
the tool and see which one disappears. Then plug the tool back in to see it
reappear

4. Click once on this device to select it, and then right-click on this device and select
Uninstall from the drop-down menu. Click OK to the warning

Note: DO NOT unplug the tool from the USB port at this time. Leave it plugged in

 2003 Microchip Technology Inc. DS51417B-page 1
Development Systems
Installing the Correct USB Drivers
1. Go to Start on the menu bar and select Settings, and then the Control Panel

2. In the Control Panel, double-click on Add/Remove Hardware

3. On the Welcome screen, click Next. Then click on the Add button and again click
Next

4. At this point (after the system does some searching), it should say that it found
new hardware, i.e., the Add New Hardware wizard should appear

5. Click Next on the Add New Hardware wizard. Then select the “Search” option
and again click Next

6. Uncheck all the boxes and then check only the one that says “Specify a location”

Click Next

7. The opportunity will then be given to Browse. For the standard MPLAB IDE
install, find the following directory and click OK:
C:\Program Files\MPLAB IDE\Driversnn\USBtool
where nn = Windows version (ex: XP) and tool = development tool (ex: ICD2.)
8. Click Open. The wizard should say that it found a driver. Click Next

9. Click Finish on the next screen. The wizard should say that it found the Firmware
Loader or Firmware Client, depending on which was missing

10. Once this is done, a prompt may ask for an indication where the appropriate
.SYS file (ToolNameWinVersion.Sys) is located. Browse to the directory in
step 7, which contains that file. Then click Next or OK and follow any other
instructions until Finished

11. Now, look in the Device Manager under USB and the “Microchip Toolname
Firmware Client” should be listed

DS51417B-page 2  2003 Microchip Technology Inc

Uninstalling Incorrect USB Device Drivers
COMPLEX UNINSTALL METHOD
If the simple uninstall method did not fix the communications problem, the PC register
will have to be edited

First, the registry file needs to be backed up, then the Windows default USB drivers
need to be uninstalled so that the correct Microchip tool USB drivers may be installed

Backing Up the Registry
To back up the registry, administrative login privileges are necessary
(Windows 2000/XP) so that REGEDIT (or REGEDT32) can be run

1. From the PC desktop, select Start>Run and enter REGEDIT

2. In REGEDIT, select File>Export (or Registry>Export Registry File) to open the
Export Register File dialog

3. Find a location for the registry file. Then enter a File name. Ensure that “All” is
selected in the export settings. Click Save

 2003 Microchip Technology Inc. DS51417B-page 3
Development Systems
Removing the Incorrect USB Drivers
1. Unplug the tool from the USB port

2. In REGEDIT (or REGEDT32), go to HKEY_LOCAL_MACHINE>SYSTEM>
CONTORLSET001>ENUM>USB. Highlight the following key, depending on the
tool being used:
• VID_04D8&PID_8000 – MPLAB ICD 2
• VID_04D8&PID_9000 – MPLAB ICE 4000
3. For Windows 2000/XP, the permissions will need to be changed before the key
can be deleted

a) Right-click on the key and select Permissions (or select Security>Permissions.)
DS51417B-page 4  2003 Microchip Technology Inc

Uninstalling Incorrect USB Device Drivers
b) In Permissions for the key, ensure that “Everyone” is selected to Full Control

c) Ensure that the “Allow inheritable permissions from parent to propagate to this
object” is checked. This check box may be on the Advanced Security Settings
dialog (click the Advanced button) or may be on the main Permissions dialog

d) Click OK to set the new permissions

 2003 Microchip Technology Inc. DS51417B-page 5
Development Systems
4. Delete the highlighted key

5. Highlight the following key, depending on the tool being used:
• VID_04D8&PID_8001 – MPLAB ICD 2
• VID_04D8&PID_9001 – MPLAB ICE 4000
6. For Windows 2000/XP, repeat (3)

7. Delete the highlighted key

8. Select the keys from step 2 and step 5 from directories Controlsetnnn and
CurrentControlset, i.e., repeat steps 2-7 for Controlsetnnn and
CurrentControlset. (Where nnn is a number)

Under Win98, these keys may be located under different folders. All instances
of these keys must be removed from the registry

9. Exit REGEDIT and open Windows Explorer

DS51417B-page 6  2003 Microchip Technology Inc

Uninstalling Incorrect USB Device Drivers
10. Go to Windows\INF (or Winnt\INF.) Use the File Search to search this
directory, and all subsequent subdirectories, for all .INF files that contain
reference to the following:
• The keys specified in step 2 and step 5
Delete these files

Note: Keep track of the INF file names that are deleted, because the
corresponding files with PNF extensions will have to be deleted as well. For
example, if OEM26.INF is deleted, OEM26.PNF will also need to be
deleted, if it exists. PNF files are not text files and cannot be searched like
INF files

Go to Windows\system32\drivers (or Winnt\system32\drivers) and delete
the ToolNameWinVersion*.Sys files, where ToolName = abbreviated name of the tool
and WinVersion = abbreviated name of Windows version. Under Windows XP,
WinVersion = 2k

Example: For MPLAB ICD 2 on a Windows 2000 system:
• icd2w2k.sys
• icd2w2kL.sys
11. Reboot the system

 2003 Microchip Technology Inc. DS51417B-page 7
Development Systems
Installing the Correct USB Drivers
Before plugging in the tool to a USB port, check/do the following:
1. Install the latest MPLAB IDE so that the latest device drivers and INF file are in
the MPLAB IDE drivers subdirectory

2. Install the latest service packs for the OS

3. Ensure that the administrator mode is active, with all rights and privileges turned
on for the system and registry (Windows 2000/XP.)
4. Disconnect from any networks

Plug the tool being used into a USB port. This port should be one of the following:
• The primary USB port on the system

• An add-in card, which acts like a motherboard USB port
• A powered hub
The Add New Hardware wizard should come up, the INF file should be accessible and
the loader and client drivers should come up OK

INSTALLATION ISSUES
Windows 2000 Users
A patch on the Microsoft windows update site may help if you are experiencing a
problem with loading the MPLAB ICD 2 USB drivers. The patch is applicable to those
who have updated to Windows 2000 SP4. Here is the comment from Microsoft:
"Some driver installation programs don’t work on Windows 2000 (W2K) after you install
either Critical Update QFE 813044 or W2K Server SP4. The installation does not
succeed and you receive an incorrect error that no drivers are available for the device."
The patch can be found at:
http://www.microsoft.com/downloads/details.aspx?displaylang=
en&familyid=7C896E82-4B50-44C8-A634-3227C0E71293
DS51417B-page 8  2003 Microchip Technology Inc

Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property

• Microchip is willing to work with the customer who is concerned about the integrity of their code

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act

Information contained in this publication regarding device Trademarks
applications and the like is intended through suggestion only The Microchip name and logo, the Microchip logo, Accuron,
and may be superseded by updates. It is your responsibility to dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART,
ensure that your application meets with your specifications. PRO MATE and PowerSmart are registered trademarks of
No representation or warranty is given and no liability is Microchip Technology Incorporated in the U.S.A. and other
assumed by Microchip Technology Incorporated with respect countries

to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER,
use or otherwise. Use of Microchip’s products as critical SEEVAL and The Embedded Control Solutions Company are
components in life support systems is not authorized except registered trademarks of Microchip Technology Incorporated
with express written approval by Microchip. No licenses are in the U.S.A

conveyed, implicitly or otherwise, under any intellectual Application Maestro, dsPICDEM, dsPICDEM.net, ECAN,
property rights. ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
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PowerMate, PowerTool, rfLAB, rfPIC, Select Mode,
SmartSensor, SmartShunt, SmartTel and Total Endurance are
trademarks of Microchip Technology Incorporated in the
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Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A

All other trademarks mentioned herein are property of their
respective companies

© 2003, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved

Printed on recycled paper

Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002

The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals,
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 2003 Microchip Technology Inc. DS51417B-page 9
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DS51417B-page 10  2003 Microchip Technology Inc

(Windows 2000/XP) so that REGEDIT (or REGEDT32) can be run. 1. From the PC desktop, select Start>Run and enter REGEDIT. 2. In REGEDIT, select File>Export (or Registry>Export …

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Frequently Asked Questions

How to fix microchip usb device drivers not working on windows?

First remove the reference to the USB device from the Device Manager. Then install the correct Microchip USB device drivers. Removing the Incorrect USB Drivers At this time, the PC system should be booted up and idle. Also, the development tool should be plugged into a PC USB port. 1.

Who is the author of uninstalling incorrect usb driver?

Uninstalling Incorrect USB Device Drivers Author Microchip Technology Inc. Subject Development Tools Keywords Dev Systems, USB Device Drivers, USB Drivers Created Date 12/4/2003 10:17:58 AM

Why cant i install microchip development tools on windows?

RECOMMENDED UNINSTALL METHODS When using Microchip development tools, trouble may be experienced as a result of incorrect device drivers being installed. If the Windows®OS installs its default USB device drivers for a Microchip development tool, the tool will not function properly, if at all.

How to install the correct usb drivers in windows 10?

Installing the Correct USB Drivers 1. Go to Start on the menu bar and select Settings, and then the Control Panel. 2. In the Control Panel, double-click on Add/Remove Hardware. 3. On the Welcome screen, click Next. Then click on the Add button and again click Next. 4.