Calibre unable to detect Kindle PW (Win10)

[C919530]

Hi, I have a computer running Windows 10, and I am trying to upload new books to my Kindle PW but I cannot get Calibre to detect the device. I have followed the troubleshooting steps in the guide, reset my Kindle, uninstalled and reinstalled Calibre, to no avail. My computer is able to detect the Kindle PW, but it tells me that the disk is write protected.

Debug log:

Spoiler:

calibre 3.26.1 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.17134-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.17134')
Python 2.7.12+
Windows: ('10', '10.0.17134', 'SP0', u'Multiprocessor Free')
Interface language: None
USB devices on system:
(USBDevice(vendor_id=0xcf3 product_id=0xe300 bcd=0x1 devid=usb\vid_0cf3&pid_e300&rev_0001 devinst=1),
USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1203 devid=usb\vid_046d&pid_c52b&rev_1203&mi_02 devinst=2),
USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub30&vid8086&pid9d2f&rev0021 devinst=3),
USBDevice(vendor_id=0x5e3 product_id=0x610 bcd=0x4143 devid=usb\vid_05e3&pid_0610&rev_4143 devinst=4),
USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1203 devid=usb\vid_046d&pid_c52b&rev_1203&mi_01 devinst=5),
USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1203 devid=usb\vid_046d&pid_c52b&rev_1203&mi_00 devinst=6),
USBDevice(vendor_id=0x46d product_id=0xc52f bcd=0x3000 devid=usb\vid_046d&pid_c52f&rev_3000&mi_01 devinst=7),
USBDevice(vendor_id=0x46d product_id=0xc52f bcd=0x3000 devid=usb\vid_046d&pid_c52f&rev_3000&mi_00 devinst=8),
USBDevice(vendor_id=0x46d product_id=0xc52f bcd=0x3000 devid=usb\vid_046d&pid_c52f&rev_3000 devinst=9),
USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1203 devid=usb\vid_046d&pid_c52b&rev_1203 devinst=10),
USBDevice(vendor_id=0xbda product_id=0x568b bcd=0x6318 devid=usb\vid_0bda&pid_568b&rev_6318 devinst=11),
USBDevice(vendor_id=0x5e3 product_id=0x617 bcd=0x4143 devid=usb\vid_05e3&pid_0617&rev_4143 devinst=12),
USBDevice(vendor_id=0xbda product_id=0x568b bcd=0x6318 devid=usb\vid_0bda&pid_568b&rev_6318&mi_00 devinst=13),
USBDevice(vendor_id=0x1949 product_id=0x4 bcd=0x100 devid=usb\vid_1949&pid_0004&rev_0100 devinst=17),
USBDevice(vendor_id=0x45e product_id=0xdb bcd=0x173 devid=usb\vid_045e&pid_00db&rev_0173 devinst=14),
USBDevice(vendor_id=0x45e product_id=0xdb bcd=0x173 devid=usb\vid_045e&pid_00db&rev_0173&mi_01 devinst=15),
USBDevice(vendor_id=0x45e product_id=0xdb bcd=0x173 devid=usb\vid_045e&pid_00db&rev_0173&mi_00 devinst=16))

No disabled plugins
Looking for devices of type: MTP_DEVICE
List of WPD PNP ids:
[u'\\\\?\\swd#wpdbusenum#_??_usbstor#disk&ven_kindl e&prod_internal_storage&rev_0100#9017220144360n1n& 0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}#{6ac27878-a6fa-4155-ba85-f98f491d4f33}']
No suitable MTP devices found

Looking for devices of type: SMART_DEVICE_APP
All IP addresses {'{6C3F1A93-6252-485D-9932-4D91C951FCDC}': [{'broadcast': u'10.185.3.242', 'addr': u'10.185.3.242', 'netmask': u'255.255.255.255'}], '{AEF4D5F6-B2AB-4591-8573-B9B5CA38C358}': [{'broadcast': u'10.2.175.233', 'addr': u'10.2.175.233', 'netmask': u'255.255.255.255'}], '{1BDE8D18-6BC7-11E8-BBCA-806E6F6E6963}': [{'broadcast': u'127.0.0.1', 'addr': u'127.0.0.1', 'netmask': u'255.255.255.255'}]}
No device is connected

Looking for devices...
USBDevice(vendor_id=0x1949 product_id=0x4 bcd=0x100 devid=usb\vid_1949&pid_0004&rev_0100 devinst=17)
Detected possible device KINDLE2

Devices possibly connected: Kindle 2/3/4/Touch/PaperWhite/Voyage Device Interface,
Trying to open Kindle 2/3/4/Touch/PaperWhite/Voyage Device Interface ... Storage number map:
{(7L, 0L): [(3L, 'C')], (7L, 1L): [(1L, 'D')]}
Storage number for USBSTOR\DISK&VEN_KINDLE&PROD_INTERNAL_STORAGE&REV_ 0100\9017220144360N1N&0: StorageDeviceNumber(type=7L, number=1L, partition_number=0L)
Drive letters for USBDevice(vendor_id=0x1949 product_id=0x4 bcd=0x100 devid=usb\vid_1949&pid_0004&rev_0100 devinst=17)
{u'drive_letters': ['D'],
u'pnp_id_map': {'D': u'\\\\?\\usbstor#disk&ven_kindle&prod_internal_sto rage&rev_0100#9017220144360n1n&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}'},
u'readonly_drives': set(['D']),
u'sort_map': {'D': (1L, 1L)}}
Ignoring the drive D as it is readonly
failed
Opening of the following devices failed
<calibre.devices.kindle.driver.KINDLE2 object at 0x000002C4105B6CF8>
Traceback (most recent call last):
File "site-packages\calibre\devices\__init__.py", line 158, in debug
File "site-packages\calibre\devices\usbms\device.py", line 834, in open
File "site-packages\calibre\devices\usbms\device.py", line 274, in open_windows
DeviceError: Unable to detect any disk drives for the device: Amazon Kindle. Try rebooting

Any help would be appreciated.

[kovidgoyal]

Your kindle is marked read-only which is why calibre cannot connect to it. calibre has to be able to write to the kindle. A reset of the kindle should fix that, if not, contact amazon for a replacement.

[C919530]

See next post for solution.

[C919530]

Found the solution. If anyone has the same problem, try this:

1. Open "regedit" on your computer
2. Go to "Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl Set\Control\StorageDevicePolicies"
3. Look for “WriteProtect“
4. Modify the value of “WriteProtect“ to 0