When attempting to connect iPhone, iPad, or iPod touch to your Windows PC, you may see one or more of the following error messages:

iTunes could not connect to this iPhone because an unknown error occurred (0xE8000065)
iTunes could not connect to this iPhone because an unknown error occurred (0xE800000a)
iTunes could not connect to this iPhone because an unknown error occurred (0xE800006b)
iTunes could not connect to this iPhone because an unknown error occurred (0xE8000001)

Alternatively, the error may be the same as above but end with a different number.
The following steps may resolve the issue.

Related posts:

1. iPhone and iPod touch: Unknown error containing ’0xE’ when connecting
2. iPhone, iPad, iPod touch: Troubleshooting USB connection
3. iPhone, iPad, iPod touch: Device not recognized in iTunes for Mac OS X
4. iPhone, iPad, or iPod touch: Device not recognized in iTunes for Windows
5. iTunes for Windows: iTunes cannot contact the iPhone, iPad, or iPod software update server