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HarryT · 11-30-2017, 12:14 PM

I think the answer may be that the MTP protocol (which Android devices use to communicate) only supports one connection at a time, so if you have the device open in Windows Explorer, Calibre won't be able to connect to it.

I'm sure that someone more knowledgeable than I will be able to confirm or deny that.

11-30-2017, 12:14 PM	#4
HarryT eBook Enthusiast Posts: 85,557 Karma: 93980341 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	I think the answer may be that the MTP protocol (which Android devices use to communicate) only supports one connection at a time, so if you have the device open in Windows Explorer, Calibre won't be able to connect to it. I'm sure that someone more knowledgeable than I will be able to confirm or deny that.