Device hung up message on Kindle Fire 7

calibre 9.11 embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.14.6
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 33, 0) && DeDRM (10, 0, 18) && Package KFX (from KFX Input) (2, 33, 0) && Barnes & Noble (1, 5, 8) && Clean Metadata (0, 0, 6) && Copy Cover To Device (2, 0, 4) && EpubCheck (0, 2, 6) && EpubMerge (3, 2, 0) && Fantastic Fiction (1, 7, 2) && Fantastic Fiction Adults (1, 3, 1) && FictionDB (1, 4, 3) && Find Duplicates (1, 10, 10) && Generate Cover (2, 4, 1) && Goodreads (1, 8, 5) && KFX metadata reader (from KFX Input) (2, 33, 0) && From KFX (2, 33, 0) && KFX Input (2, 33, 0) && Kindle Collections (1, 7, 29) && Kindle hi-res covers (0, 5, 1) && KindleUnpack - The Plugin (0, 84, 0) && Manage Series (1, 5, 4) && Medical Reader (1, 0, 1) && Modify ePub (1, 8, 9) && Obok DeDRM (7, 2, 1) && Prettify Cover (1, 6, 0) && Quality Check (1, 14, 7) && Quick Preferences (1, 7, 2) && Reading List (1, 15, 7) && Reformat plugin (2, 4, 0) && Resize Cover (1, 2, 2) && Save To Format (0, 0, 6) && Search The Internet (1, 11, 4) && SmartEject (2, 6, 0) && Smashwords Metadata (1, 0, 2)
wpd.WPDError: C:\r\src\src\calibre\devices\mtp\windows\content_e numeration.cpp:439:Failed to EnumObjects() of folder from device:[hr=0x802a0006 wCode=0 name=E_WPD_DEVICE_IS_HUNG] The requested value cannot be determined.: o20


using windows 10 64 bit and kindle fire 7 - 12 generation. Connecting via usb cable. Will work great transferring books to kindle from desktop for about 30" then a Cant connect to Device message box and the above error message. Have restarted desktop and kindle both. Appreciate any help...

Pook