Reply
Logi Nu
Aiwa
Posts: 4
Registered: ‎10-26-2012
Accepted Solution

C920 Windows 7 64-bit Drivers Broken (?)

Hello all,

 

I just got myself an HD Pro Webcam C920. I downloaded the latest LWS 2.51 drivers. They install, but during the installation my webcam is not detected.

 

I attempted to manually install the drivers from the Windows device manager. The webcam shows up as "Unknown device". The device status is "The drivers for this device are not installed. (Code 28) ..."

 

When I click "Update Driver", Windows does find the Logitech C920 drivers (with signature). When I try to install them however, I get an error:

 

--------

Windows encountered a problem installing the driver software for your device

 

Windows found driver software for your device but an encountered an error while attempting to install it.

 

Logitech USB Camera (HD Pro Webcam C920)

 

An error occurred during the installation of the device:

 

The driver installation file for this device is missing a necessary entry. This may be because the INF was written for Windows 95 or later. Contact your hardware vendor.

 

If you know the manufacturer of your device, you can visit its website and check the support section for driver software.

---------

 

I am running Windows 7 64-bit, Service Pack 1. Everything works find except for the webcam.

 

I tried rebooting, uninstalling, and reinstalling the drivers multiple times. No effect. Something about these drivers is broken.

 

Your help is appreciated.

Logi Nu
Aiwa
Posts: 4
Registered: ‎10-26-2012

Re: C920 Windows 7 64-bit Drivers Broken (?)

I believe I narrowed down the problem. It seems to be an issue with the signature/certificate of the driver.

 

Note that I have never made any changes to the security settings of my PC. In particular, I have never tinkered with certificates.

 

Here are the relevant log file snippets from the installation:

 

=== LDPINST.LOG ===

 

****************************************
New Trace started at 22:20 on 10/26/2012 (Local)
****************************************
****************************************
LDPINST called with following command line
"C:\PROGRAM FILES\COMMON FILES\LOGISHRD\DRIVERSTORE\LDPINST.EXE" /L /R:LOGITECH /P:8A7CC961-B5CA-4E40-A8EC-74ACBC81B116,250,800,1000
****************************************
*********************** OS INFO DUMP *****************************
OS: [WINDOWS 7]
* LDPINST version: [4,90,80,00]
* OS version: 6.1
* ServicePack version: 1.0
* ServicePack: Service Pack 1
* Platform ID: 2
* Build number: 7601
******************************************************************
Waiting for another instance to close...
UI Window name parsed "8A7CC961-B5CA-4E40-A8EC-74ACBC81B116"
Parsed UI Min report value 250
Parsed UI Max report value 800
Parsed UI 100% value 1000
Scaning '\\?\C:\Program Files\Common Files\logishrd\DriverStore\store\*.*' for files to restore.
 Store does not exist.
****************************************
 INSTALLING
****************************************
Configuration tool not present (2). Setup skipped.
Wait for pending installation to complete...
Building INI file list (Install).
 INI file 'MyListOfInf.ini' is active.
Building INFs list to be installed for flavor [logitech]
 Added INF file : 'PRO564\lPRO564c.inf'.
 Added INF file : 'PRO564\lPRO564v.inf'.
 Added INF file : 'PRO564\lPRO564s.inf'.
Building INFs to be un-installed.
Scanning for connected Logitech hardware...
 Size of DevIdList is 25848 bytes.
Added 1 devices.
 3 INFs to register. 1 Devices to update (1 are connected).
No INF file to be un-installed.
Un-installing INF files if version is different .
Removed 0 files.
Time Spent (Uninstalling INF) : 1 sec.
Installing INF : c:\program files\common files\logishrd\driverstore\pro564\lpro564c.inf
 Successfully copied as C:\Windows\INF\oem102.inf
 DrvStore:C:\Windows\System32\DriverStore\FileRepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf.
 Time Spent (Installing INF) : 1 sec.
Installing INF : c:\program files\common files\logishrd\driverstore\pro564\lpro564v.inf
 Successfully copied as C:\Windows\INF\oem103.inf
 DrvStore:C:\Windows\System32\DriverStore\FileRepository\lpro564v.inf_amd64_neutral_8a8244f4dc8c3a86\lpro564v.inf.
 Time Spent (Installing INF) : 10 sec.
Installing INF : c:\program files\common files\logishrd\driverstore\pro564\lpro564s.inf
 Successfully copied as C:\Windows\INF\oem104.inf
 DrvStore:C:\Windows\System32\DriverStore\FileRepository\lpro564s.inf_amd64_neutral_dbdfaf5fa64967f9\lpro564s.inf.
 Time Spent (Installing INF) : 5 sec.
Scanning for connected Logitech hardware...
 Size of DevIdList is 25922 bytes.
No new device found.
Device 'USB\VID_046D&PID_082D\362513FF' (0x5D14-7-Present)
 Device Status:0x01806400 - Code:28.
Installing 'USB\VID_046D&PID_082D'
 INF 'c:\program files\common files\logishrd\driverstore\pro564\lpro564c.inf'
 Started at Time:05:21:03 Date:10/27/2012 (Timeout:300 sec).
 ERROR: UpdateDriver( ) failed. Reason:0xE0000219.
 Time Spent (Installing) : 1 sec.
Warning: Some devices got removed during installation.
Device 'USB\VID_046D&PID_082D\362513FF' (0x5D14-7-Present)
 Device Status:0x01806400 - Code:28.
Progress bar full filling
Time Spent (Total) : 20 sec.
Exit Code : 0x0.
****************************************
Trace Ended at 22:21 on 10/26/2012 (Local)
****************************************

 

 

=== setupapi.app.log ===

 

>>>  [Build Driver List - USB\VID_046D&PID_082D\362513FF]
>>>  Section start 2012/10/26 22:38:56.313
      cmd: "C:\Windows\System32\DeviceProperties.exe" "USB\VID_046D&PID_082D\362513FF"
     cpy: Policy is set to make all digital signatures equal.
!    sig: Verifying file against specific (valid) catalog failed! (0x800b0109)
!    sig: Error 0x800b0109: A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider.
<<<  Section end 2012/10/26 22:38:56.703
<<<  [Exit status: SUCCESS]

 

 

=== setupapi.dev.log ===

>>>  [Device Install (DiShowUpdateDevice) - USB\VID_046D&PID_082D\362513FF]
>>>  Section start 2012/10/26 22:38:41.103
      cmd: "C:\Windows\System32\DeviceProperties.exe" "USB\VID_046D&PID_082D\362513FF"
     dvi: {DIF_UPDATEDRIVER_UI} 22:38:41.103
     dvi:      No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:      Default installer: Enter 22:38:41.103
     dvi:      Default installer: Exit
     dvi: {DIF_UPDATEDRIVER_UI - exit(0xe000020e)} 22:38:41.103
     ndv: {Update Driver Software Wizard for USB\VID_046D&PID_082D\362513FF}
     dvi:      Set selected driver complete.
     dvi:      {DIF_SELECTDEVICE} 22:38:56.157
     dvi:           No class installer for 'Universal Serial Bus controllers'
     dvi:      {DIF_SELECTDEVICE - exit(0xe000020e)} 22:38:56.157
     inf:      {SetupCopyOEMInf: C:\Windows\INF\oem102.inf} 22:39:02.397
     inf:           Driver Store location: C:\Windows\System32\DriverStore\FileRepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf
     inf:           Published Inf Path: C:\Windows\INF\oem102.inf
     inf:           Opened PNF: 'C:\Windows\INF\oem102.inf' ([strings])
     inf:           Installing catalog lPRO564c.cat as: oem102.CAT
!    inf:           Failed to install catalog - error ignored
!    inf:           Error 2: The system cannot find the file specified.
     inf:           OEM source media location: C:\Windows\INF\
     inf:      {SetupCopyOEMInf exit (0x00000000)} 22:39:02.803
     dvi:      Searching for hardware ID(s):
     dvi:           usb\vid_046d&pid_082d&rev_0011
     dvi:           usb\vid_046d&pid_082d
     dvi:      Searching for compatible ID(s):
     dvi:           usb\devclass_00&subclass_00&prot_00
     dvi:           usb\devclass_00&subclass_00
     dvi:           usb\devclass_00
     dvi:           usb\composite
     inf:      Opened PNF: 'C:\Windows\System32\DriverStore\FileRepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     dvi:      Selected driver installs from section [LogiHub.Dev.NT] in 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf'.
     dvi:      Class GUID of device remains: {36fc9e60-c465-11cf-8056-444553540000}.
     dvi:      Set selected driver complete.
     dvi:      {Plug and Play Service: Device Install for USB\VID_046D&PID_082D\362513FF}
     ump:           Creating Install Process: DrvInst.exe 22:39:02.818
     ndv:           Infpath=C:\Windows\INF\oem102.inf
     ndv:           DriverNodeName=lpro564c.inf:Logitech.Section.NTamd64.6.0:LogiHub.Dev.NT:13.40.840.0:usb\vid_046d&pid_082d
     ndv:           DriverStorepath=C:\Windows\System32\DriverStore\FileRepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf
     ndv:           Building driver list from driver node strong name...
     dvi:           Searching for hardware ID(s):
     dvi:                usb\vid_046d&pid_082d&rev_0011
     dvi:                usb\vid_046d&pid_082d
     dvi:           Searching for compatible ID(s):
     dvi:                usb\devclass_00&subclass_00&prot_00
     dvi:                usb\devclass_00&subclass_00
     dvi:                usb\devclass_00
     dvi:                usb\composite
     inf:           Opened PNF: 'C:\Windows\System32\DriverStore\FileRepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     dvi:           Selected driver installs from section [LogiHub.Dev.NT] in 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf'.
     dvi:           Class GUID of device remains: {36fc9e60-c465-11cf-8056-444553540000}.
     dvi:           Set selected driver complete.
     ndv:           {Core Device Install} 22:39:02.850
     inf:                Opened PNF: 'C:\Windows\INF\oem102.inf' ([strings])
     dvi:                {DIF_ALLOW_INSTALL} 22:39:02.865
     dvi:                     No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:                     No CoInstallers found
     dvi:                     Default installer: Enter 22:39:02.865
     dvi:                     Default installer: Exit
     dvi:                {DIF_ALLOW_INSTALL - exit(0xe000020e)} 22:39:02.865
     ndv:                Installing files...
     dvi:                {DIF_INSTALLDEVICEFILES} 22:39:02.865
     dvi:                     No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:                     Default installer: Enter 22:39:02.865
     dvi:                          {Install FILES}
     inf:                               Opened PNF: 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     inf:                               {Install Inf Section [LogiHub.Dev.NT]}
     inf:                               {Install Inf Section [LogiHub.Dev.NT] exit (0x00000000)}
     inf:                               {Install Inf Section [Composite.Dev.NT]}
     inf:                               {Install Inf Section [Composite.Dev.NT] exit (0x00000000)}
     dvi:                               Processing co-installer registration section [LogiHub.Dev.NT.CoInstallers].
     inf:                               {Install Inf Section [LogiHub.Dev.NT.CoInstallers]}
     inf:                               {Install Inf Section [LogiHub.Dev.NT.CoInstallers] exit (0x00000000)}
     dvi:                               Co-installers registered.
     dvi:                               {Install INTERFACES}
     dvi:                                    Installing section [LogiHub.Dev.NT.Interfaces]
     dvi:                               {Install INTERFACES exit 00000000}
     dvi:                          {Install FILES exit (0x00000000)}
     dvi:                     Default installer: Exit
     dvi:                {DIF_INSTALLDEVICEFILES - exit(0x00000000)} 22:39:02.865
     ndv:                Pruning file queue...
     dvi:                {_SCAN_FILE_QUEUE}
     flq:                     ScanQ flags=620
     flq:                          SPQ_SCAN_PRUNE_COPY_QUEUE
     flq:                          SPQ_SCAN_FILE_COMPARISON
     flq:                          SPQ_SCAN_ACTIVATE_DRP
     flq:                     ScanQ number of copy nodes=0
     flq:                     ScanQ action=200 DoPruning=32
     flq:                     ScanQ end Validity flags=620 CopyNodes=0
     dvi:                {_SCAN_FILE_QUEUE exit(0, 0x00000000)}
     ndv:                Committing file queue...
     flq:                {_commit_file_queue}
     flq:                     CommitQ DelNodes=0 RenNodes=0 CopyNodes=0
     flq:                     CommitQ early exit: No nodes are queued
     flq:                {_commit_file_queue exit OK}
     ndv:                Registering CoInstallers...
     dvi:                {DIF_REGISTER_COINSTALLERS} 22:39:02.865
     dvi:                     No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:                     Default installer: Enter 22:39:02.865
     inf:                          Opened PNF: 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     inf:                          {Install Inf Section [LogiHub.Dev.NT.CoInstallers]}
     inf:                          {Install Inf Section [LogiHub.Dev.NT.CoInstallers] exit (0x00000000)}
     dvi:                          Co-installers registered.
     dvi:                     Default installer: Exit
     dvi:                {DIF_REGISTER_COINSTALLERS - exit(0x00000000)} 22:39:02.881
     ndv:                Installing interfaces...
     dvi:                {DIF_INSTALLINTERFACES} 22:39:02.881
     dvi:                     No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:                     No CoInstallers found
     dvi:                     Default installer: Enter 22:39:02.881
     dvi:                          {Install INTERFACES}
     inf:                               Opened PNF: 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     dvi:                               Installing section [LogiHub.Dev.NT.Interfaces]
     dvi:                          {Install INTERFACES exit 00000000}
     dvi:                     Default installer: Exit
     dvi:                {DIF_INSTALLINTERFACES - exit(0x00000000)} 22:39:02.881
     ndv:                Installing device...
     dvi:                {DIF_INSTALLDEVICE} 22:39:02.881
     dvi:                     No class installer for 'Logitech USB Camera (HD Pro Webcam C920)'
     dvi:                     Default installer: Enter 22:39:02.881
     dvi:                          {Install DEVICE}
     inf:                               Opened PNF: 'c:\windows\system32\driverstore\filerepository\lpro564c.inf_amd64_neutral_ac8a32b8aa0d9de8\lpro564c.inf' ([strings])
     dvi:                               Processing Registry/Property directives...
     inf:                               {Install Inf Section [LogiHub.Dev.NT]}
     inf:                               {Install Inf Section [LogiHub.Dev.NT] exit (0x00000000)}
     inf:                               {Install Inf Section [Composite.Dev.NT]}
     inf:                               {Install Inf Section [Composite.Dev.NT] exit (0x00000000)}
     inf:                               {Install Inf Section [LogiHub.Dev.NT.Hw]}
     inf:                                    Empty section
     inf:                               {Install Inf Section [LogiHub.Dev.NT.Hw] exit (0x00000000)}
     dvi:                               {Writing Device Properties}
     dvi:                                    Provider name=Logitech
     dvi:                                    DriverDate 12/14/2011
     dvi:                                    DriverVersion=13.40.840.0
     dvi:                                    Class name=USB
     dvi:                                    Manufacturer=Logitech
     dvi:                                    Matching DeviceID=usb\vid_046d&pid_082d
     dvi:                                    Strong Name=oem102.inf:Logitech.Section.NTamd64.6.0:LogiHub.Dev.NT:13.40.840.0:usb\vid_046d&pid_082d
     dvi:                               {Writing Device Properties - Complete}
!!!  dvi:                               Error: No INF AddService directives contained the flag SPSVCINST_ASSOCSERVICE
!!!  dvi:                               Error while installing services.
!!!  dvi:                               Error 0xe0000219: The installation failed because a function driver was not specified for this device instance.
!!!  dvi:                               Cleaning up failed installation
!!!  dvi:                               Error 0xe0000219: The installation failed because a function driver was not specified for this device instance.
     dvi:                          {Install DEVICE exit (0xe0000219)}
!!!  dvi:                          Cleaning up failed installation (e0000219)
!!!  dvi:                     Default installer: failed!
!!!  dvi:                     Error 0xe0000219: The installation failed because a function driver was not specified for this device instance.
     dvi:                {DIF_INSTALLDEVICE - exit(0xe0000219)} 22:39:02.896
!!!  ndv:                Error(e0000219) installing device!
     ndv:                Device install status=0xe0000219
     ndv:                Performing device install final cleanup...
!    ndv:                Queueing up error report since device installation failed...
     ndv:           {Core Device Install - exit(0xe0000219)} 22:39:02.896
     ump:           Server install process exited with code 0xe0000219 22:39:02.896
     ump:      {Plug and Play Service: Device Install exit(e0000219)}
     ndv:      Device Install failed for new device...installing NULL driver.
     dvi:      {Plug and Play Service: Device Install for USB\VID_046D&PID_082D\362513FF}
     ump:           Creating Install Process: DrvInst.exe 22:39:02.896
!    ndv:           Installing NULL driver!
     dvi:           Set selected driver complete.
     dvi:           {DIF_ALLOW_INSTALL} 22:39:02.912
     dvi:                No class installer for 'Universal Serial Bus controllers'
     dvi:                No CoInstallers found
     dvi:                Default installer: Enter 22:39:02.912
     dvi:                Default installer: Exit
     dvi:           {DIF_ALLOW_INSTALL - exit(0xe000020e)} 22:39:02.912
     dvi:           {DIF_INSTALLDEVICE} 22:39:02.912
     dvi:                No class installer for 'Universal Serial Bus controllers'
     dvi:                Default installer: Enter 22:39:02.912
!    dvi:                     Installing NULL driver!
     dvi:                     Writing common driver property settings.
!    dvi:                     Failed to set Device Description property: (null)
!    dvi:                     Error 1784: The supplied user buffer is not valid for the requested operation.
     dvi:                     {Restarting Devices} 22:39:02.912
     dvi:                          Restart: USB\VID_046D&PID_082D\362513FF
     dvi:                          Restart complete.
     dvi:                     {Restarting Devices exit} 22:39:03.146
     dvi:                Default installer: Exit
     dvi:           {DIF_INSTALLDEVICE - exit(0x00000000)} 22:39:03.162
     ump:           Server install process exited with code 0x00000000 22:39:03.162
     ump:      {Plug and Play Service: Device Install exit(00000000)}
     ndv: {Update Driver Software Wizard exit(e0000219)}
<<<  Section end 2012/10/26 22:39:12.657
<<<  [Exit status: FAILURE(0xe0000219)]

Logi Nu
Aiwa
Posts: 4
Registered: ‎10-26-2012

Re: C920 Windows 7 64-bit Drivers Broken (?)

I put my Windows installation in test mode (no driver signatures required). Same error. I thus suspect that the certificate error is a red herring. The real problem may be this:

 

!!!  dvi:                               Error: No INF AddService directives contained the flag SPSVCINST_ASSOCSERVICE
!!!  dvi:                               Error while installing services.
!!!  dvi:                               Error 0xe0000219: The installation failed because a function driver was not specified for this device

 

Seems like the INF file does not like my system or vice versa.

 

Btw, the webcam works just fine on my other Windows 7 64-bit machine, which is an old laptop that had LWS 2.40 installed back when it was still running Vista 64. So there is nothing wrong with the hardware.

 

Note that the previous message was printing the log files for the failed LWS 2.40 installation. I just tried another LWS 2.51 installation. The error logs are the same except for the driver versions, so I will spare you the dump.

Logi Nu
Aiwa
Posts: 4
Registered: ‎10-26-2012

Re: C920 Windows 7 64-bit Drivers Broken (?)

I managed to get the webcam to work, but not exactly the way I would have preferred.

 

1) I uninstalled all Logitech software

2) I unplugged the webcam

3) I configured the Device Manager to show unconnected devices

4) I uninstalled the webcam in Device Manager, deleting the driver

5) I manually erased all Logitech related files on my disk

6) I manually erased all Logitech related registry contents

7) Reboot

8) After reboot, Windows automatically installed a driver through Windows Update

 

The driver Windows installed for me works. Curiously, this driver appears to have the same version as the LWS 2.40 driver which would not work when using the Logitech installer.

KachiWachi
Posts: 47,409
Topics: 246
Kudos: 1,191
Solutions: 485
Registered: ‎05-22-2006

Re: C920 Windows 7 64-bit Drivers Broken (?)

Welcome to the Logitech Community Webcam Forum Aiwa! :smileyhappy:


Aiwa sez -

I managed to get the webcam to work, but not exactly the way I would have preferred.



OK.



Thank you for reporting back in with your progress and updated status.


KachiWachi - Webcam Forum Guru (2002), Logi Legend (2007), Distinguished Logi Legend (2010), QuickCam® Team Forums (2007)
(I am not affiliated with Logitech®, Inc., Lithium™ Technologies, Inc., or RightNow® Technologies, Inc.)
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QuickCam 11.0.0.1218 / 11.1.0.2030 / 11.5.0.1169 / 11.8.0.1065 / 11.9.0.1263 - Issues and Solutions

Is your problem one of these older, common, known, or repeat issues?     "Everything Macintosh"
How to make your Logitech camera work in an IM                     Are you looking for (older) software?
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Logi Nu
chikamir
Posts: 1
Registered: ‎01-19-2013

Re: C920 Windows 7 64-bit Drivers Broken (?)

In my case, it's hardware problem. The cable for the C920 is a bit thin. It gives "USB device not recognized" message when connected to the front end of PC or extension cable. 

 

Connecting it to one of the back USB ports made a lot of difference. Driver install was then succesful

KachiWachi
Posts: 47,409
Topics: 246
Kudos: 1,191
Solutions: 485
Registered: ‎05-22-2006

Re: C920 Windows 7 64-bit Drivers Broken (?)

Welcome to the Logitech Community Webcam Forum chikamir! :smileyhappy:


chikamir sez -

Connecting it to one of the back USB ports made a lot of difference.



OK.



Thank you for posting your comments and suggestion to this thread.


KachiWachi - Webcam Forum Guru (2002), Logi Legend (2007), Distinguished Logi Legend (2010), QuickCam® Team Forums (2007)
(I am not affiliated with Logitech®, Inc., Lithium™ Technologies, Inc., or RightNow® Technologies, Inc.)
  Have you checked your Logitech Forums Private Messages today?  

If you are looking for official Logitech Customer / Technical Support, please >> CLICK HERE <<

In order to help keep the forum content "fresh", please do not post a reply to any thread that is over six (6) months old.


* Please note that I am currently providing "general" troubleshooting assistance in the public forums once 24 hours have passed.
* However, if I am interested in your issue, and for all "advanced" issues, I will be sending you a Private Message before then.
* Thanks.

* PS - If one of my replies has adequately addressed your issue, please click on the "Accept as Solution" and "Give Kudos" buttons, so that this information can benefit others.

New to Webcams? START HERE!

Logitech Webcam Software 2.x (a.k.a. QuickCam 13.x) - Issues and Solutions
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Logi Nu
prefersdosequis
Posts: 1
Registered: ‎02-01-2013

Re: C920 Windows 7 64-bit Drivers Broken (?)

I ran into the same problem with Windows 7 x64 and couldn't find an answer on the web. I hounded a logitech level 2 tech and was able to get the answer. 

 

I was missing USB.INF from c:\windows\inf. Once I added USB.INF the Logitech camera installed perfectly. Here is his email below:

 

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Here is a list of some common USB-related files, whose absence or damage will prevent the Logitech product from in-stalling properly:

 

USB.INF

KS.INF

WDMA_USB.INF

USBVIDEO.INF (for web-camera video)

WDMAUDIO.INF (for audio USB devices, such as a microphone)

 

They’re meant to be present in C:\WINDOWS\INF (which is often hidden unless you change the folder view option in explorer, as shown in figures 1 and 2; press the Alt key to show the menu-bar, click Tools and then Folder options…

You’d also want to uncheck the “Hide extensions for known files types” because it’s a pain! )

 

If these, or other, system files are missing or damaged, it is possible to copy them from:

A) another location on the computer (this involves searching for that particular file)

B) from another computer with the same operating system

C) from a known, trusted 3rd-party source like http://WWW.INFDUMP.COM/

 

 

KachiWachi
Posts: 47,409
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Registered: ‎05-22-2006

Re: C920 Windows 7 64-bit Drivers Broken (?)

Welcome to the Logitech Community Webcam Forum prefersdosequis! :smileyhappy:


prefersdosequis sez -

I was missing USB.INF from c:\windows\inf. Once I added USB.INF the Logitech camera installed perfectly.



OK



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