Communication error canon a4000 install

Although the manual does not show how to connect to a computer, the system map shows how to use a mini USB cable to connect the camera to a PC. But before the camera will communicate with any PC or Laptop, it needs software.

From the Canon USA website you still can download the Zoombrowser EX software for free. It used to be the EOS Digital solution disk and the ArcSoft PhotoStudio Disk.
Before connecting the camera, install the software. Then when software (and driver) are installed, when connecting the camera, the software will start up and ask what to do. Like import the pictures to the computer.

Success

Try NOT connecting your camera to your computer.

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo management program such as Picasa ( http://picasa.google.com ).

Most lens error codes on a Canon A4000 are caused by a broken pinion axle pin or sheared gear teeth in the lens extender gearbox. If this is your problem you can get a new gearbox or gears at: Gearbox for A4000
To watch a YouTube video on how to repair this go to: http://www.youtube.com/watch?feature=player_detailpage&v=oMpFFtzQJwg

Not knowing your computer OS hard to say. Try re-installing the camera software.

open device manager, connect camera, it will be seen briefly with yellow triangle and exclamation mark. open it up and uninstall.
Disconnect camera and close windows down. Restart windows, connect camera and switch on, windows will then find it and install driver. Took me hours to figure this one out

This can be due to various reasons
1)The driver is corrupted: The camera's drivermay be corrupted. Uninstall the driver and any software and then connect the camera to the PC and then re-install the software.
OR
2)The USB cable might be faulty. Remove the memory card from the cam and try using a USB card reader(You can get one for 5$) and see if works. If it does may be then its time to buy a new USB cable for your cam.
3)Last but not least the cam's firware may been corrupted. Its pretty easy to flash the firmware so we can try it. Let me know if the above solutions worked or not so that we can try the firmware update

I think that Canon has an update, there are differences between Panther (10.3) and Leopard (10.5) Check here at CanonUSA

In order to get rid of the error, you have uninstall the driver, update your operating system with updates from Microsoft (see below for instructions) and follow these suggestions:

1. Best method, copy the photos to the computer by connecting a card reader to the computer and plug the SD card into the card reader and transfer using your favorite software (like Picasa) or through My Computer.
   
2. Drivers are not required for the A400 and Windows XP. So you can plug in the camera, without drivers and it should work. This appears to be the one that's not working, You need to un-install the drivers and either reinstall, try updated drivers from the links below, or don't use the drivers.

This information is in the manual on page 96. See this link for the manual.

See this link for details about the WIA driver.

About the error "driver update failed" rea

I personally have stopped altogether trying to get the drivers and software installed because they can cause more problems. I just transfer using a card reader.

If you want to use the software that comes with the A400, it's best to install ZoomBrowser, then you will need to follow to this link to get the update to this software.

Once this is done, reboot your machine to make sure the system is then up-to-date.

Make sure you have also updated your machine with Windows Updates. This is done by opening Internet Explorer and clicking on Tools | Windows Updates. Follow the links at their site to update your machine.

You do not need any software for the camera to be recognised. As you have discovered it can complicate things. Remove the software. Vista like XP before it will recognise the camera via the Camera/Scanner Wizard.

Have you updated DirectX?, I'm not sure if Vista has DX9.0 or 9.0c, but you could try and update DirectX before you install the cam software. Also if the cam is usb, did you install the software "before" connecting the cam?, some people aren't aware that usb devices have to have the software installed first, before connecting the device.