If your computer doesn't recognize your connected device, you might see an unknown error or a '0xE' error. If you do, follow these steps and try to connect your device again after each step:
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- Make sure that your iOS or iPadOS device is unlocked and on the Home screen.
- Check that you have the latest software on your Mac or Windows PC. If you're using iTunes, make sure you have the latest version.
- Make sure that your device is turned on.
- If you see a Trust this Computer alert, unlock your device and tap Trust.
- Unplug all USB accessories from your computer except for your device. Try each USB port to see if one works. Then try a different Apple USB cable.*
- Restart your computer.
- Restart your device:
- Try connecting your device to another computer. If you have the same issue on another computer, contact Apple Support.
For more help, follow the steps below for your Mac or Windows PC.
* Learn how to connect iPad Pro (11-inch) or iPad Pro 12.9-inch (3rd generation) to your computer.
If you use a Mac
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- Connect your iOS or iPadOS device and make sure that it's unlocked and on the Home screen.
- On your Mac, hold down the Option key, click the Apple menu, and choose System Information or System Report.
- From the list on the left, select USB.
- If you see your iPhone, iPad, or iPod under USB Device Tree, get the latest macOS or install the latest updates. If you don't see your device or still need help, contact Apple Support.
Turn off the laptop and disconnect it from its power source immediately. To do so, just hold down the laptop's power button. If the liquid touches the circuits on the laptop while they are active, your laptop will most likely short out, so time is very much of the essence. When shopping for laptops there are so many choices. From everyday multi tasking to everyday gaming - Acer has you covered. Check us out now.
If you use a Windows PC
The steps differ depending on if you downloaded iTunes from the Microsoft Store or from Apple.
If you downloaded iTunes from the Microsoft Store
Follow these steps to reinstall the Apple Mobile Device USB driver:
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- Disconnect your device from your computer.
- Unlock your iOS or iPadOS device and go to the Home screen. Then reconnect your device. If iTunes opens, close it.
- Click and hold (or right-click) the Start button, then choose Device Manager.
- Locate and expand the Portable Devices section.
- Look for your connected device (such as Apple iPhone), then right-click on the device name and choose Update driver.
- Select 'Search automatically for updated driver software.'
- After the software installs, go to Settings > Update & Security > Windows Update and verify that no other updates are available.
- Open iTunes.
If you downloaded iTunes from Apple
Follow these steps to reinstall the Apple Mobile Device USB driver:
- Disconnect your device from your computer.
- Unlock your iOS or iPadOS device and go to the Home screen. Then reconnect your device. If iTunes opens, close it.
- Press the Windows and R key on your keyboard to open the Run command.
- In the Run window, enter:
%ProgramFiles%Common FilesAppleMobile Device SupportDrivers
- Click OK.
- Right-click on the
usbaapl64.inf
orusbaapl.inf
file and choose Install.
You might see other files that start withusbaapl64
orusbaapl
. Make sure to install the file that ends in .inf. If you’re not sure which file to install, right-click a blank area in the File Explorer Window, click View, then click Details to find the correct file type. You want to install the Setup Information file. - Disconnect your device from your computer, then restart your computer.
- Reconnect your device and open iTunes.
If your device still isn't recognized
Check Device Manager to see if the Apple Mobile Device USB driver is installed. Follow these steps to open Device Manager:
- Press the Windows and R key on your keyboard to open the Run command.
- In the Run window, enter
devmgmt.msc
, then click OK. Device Manager should open. - Locate and expand the Universal Serial Bus controllers section.
- Look for the Apple Mobile Device USB driver.
If you don't see the Apple Mobile Device USB Driver or you see Unknown Device:
- Connect your device to your computer with a different USB cable.
- Connect your device to a different computer. If you have the same issue on another computer, contact Apple Support.
If you see the Apple Mobile Device USB driver with an error symbol:
If you see , , or next to the Apple Mobile Device USB driver, follow these steps:
- Restart the Apple Mobile Device Service.
- Check for and resolve issues with third-party security software, then restart your computer.
- Try to install the
usbaapl64.inf
orusbaapl.inf
file again.
Support for Windows 7 ended on January 14, 2020
We recommend you move to a Windows 10 PC to continue to receive security updates from Microsoft.
You can have Windows automatically download recommended drivers and detailed information for your hardware and devices. This is a good way to make sure all your hardware and devices work properly.
Drivers and information
Windows can find and download two kinds of updates for devices connected to your computer:
Drivers. A driver is software that allows your computer to communicate with hardware devices. Without drivers, the devices you connect to your computer—for example, a mouse or external hard drive—won't work properly. Windows can automatically check if there are drivers available for new devices that you connect to your computer.
For hardware that you've connected to your computer in the past, updated drivers might become available at a later date; but those drivers aren't installed automatically. To install these optional updates, go to Windows Update in Control Panel, check for updates, and then view and install driver updates that are available for your computer.Information. Windows can download high-resolution icons for many hardware devices that you connect to your computer, along with detailed information about them, such as product name, manufacturer, and model number—even detailed information about the sync capabilities of a device. These details can make it easier for you to distinguish between similar devices that are connected to your computer, such as different mobile phones.
To have Windows automatically download recommended drivers and icons
You can check Windows Update at any time to see if it found new drivers and icons for your hardware, especially if you recently installed a new device. If you want to have Windows Update automatically check for the latest drivers and icons, here's how:
Desktop Driver Check
Open Devices and Printers by clicking the Start button , and then, on the Start menu, clicking Devices and Printers.
Right-click the name of your computer, and then click Device installation settings.
Click Yes, do this automatically (recommended), and then click Save changes. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
If Yes is already selected, click Cancel to close the dialog box.
To turn on and configure Windows Update
To get all important and recommended updates for your computer and your devices, make sure that Windows Update is turned on and configured properly.
To install drivers and other optional updates from Windows Update
Even if you have Windows Update set to automatically download and install all important and recommended updates, you still might not be getting all of the updated drivers available for your devices. For instance, optional updates might include updated drivers that become available for hardware or devices you've already installed. Windows doesn't automatically download and install optional updates, but you will be notified when optional updates are available.
To get all the available updates for your devices, periodically check Windows Update for all available updates, including optional updates. You can review the available updates and then select them from the list of updates that Windows finds for your computer. Here's how to do this:
Open Windows Update by clicking the Start button . In the search box, type Update, and then, in the list of results, click Windows Update.
In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.
If there are any available updates, click the link in the box under Windows Update to see more information about each update. Each type of update might include drivers.
On the Select the updates you want to install page, look for updates for your hardware devices, select the check box for each driver that you want to install, and then click OK. There might not be any driver updates available.
On the Windows Update page, click Install updates. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Notes:
Windows Update tells you if an update is important, recommended, or optional.
Some updates require you to restart your computer.
Windows Update will tell you if the updates were successfully installed.
If Windows can't find a driver for your device
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It's best to let Windows install drivers automatically. Occasionally, Windows might not be able to find a driver for your device. If this happens, you might want to check the manufacturer's website for a driver or update for the device, or try installing any software that came with the device.
If Windows can't find information about your device in Device Stage
Device Stage is a new feature in this version of Windows that displays details about a device and tasks you can perform with that device. When you connect a device that's compatible with Device Stage to your computer, Device Stage will automatically open. Occasionally, Device Stage might open but not display any or all tasks and information about the device. Here are some reasons why that might happen, and what to do if it does:
Note: If you connect a device to your computer that reportedly supports Device Stage (but only AutoPlay opens), check with the manufacturer of the device. Find out if there are any software or firmware updates available that will make the device work with Device Stage, and confirm that the device actually supports Device Stage.
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Device Stage might need your permission to download information about your device. Check to see if there's a message in Device Stage telling you that updated information is available, and then follow the instructions.
Your computer might not be connected to the Internet. Device Stage can't download information about your device if you're offline. Try connecting the device later when you're online.
Device Stage might be trying to download information about your device. Wait a few minutes and see if Device Stage is able to find the information, especially if this is the first time you've connected the device to your computer. Device Stage will keep trying to download information about your device, even if the location where that information is stored is busy. If you don't want to wait, try connecting the device again later.