[jhowell]

Another way to disable Kindle for PC updates is to replace the "updates" folder with a file of the same name. That prevents an update from being downloaded. Kindle for PC will still ask if you want to download the new update each time it is restarted, but it will not be able to do so.

I have created a simple Windows batch file to preform this change. See attached.

Spoiler:

@echo off
set KINDLE=%LocalAppData%\Amazon\Kindle
if not exist "%KINDLE%\application\Kindle.exe" goto :nokindle
if exist "%KINDLE%\storage" if not exist "%KINDLE%\storage\" del /Q "%KINDLE%\storage"
if exist "%KINDLE%\updates" rmdir /S /Q "%KINDLE%\updates"
echo This file disables Kindle for PC downloads. > "%KINDLE%\updates"
echo Kindle for PC downloads are now disabled
goto :exit
:nokindle
echo Cannot disable downloads - Kindle for PC is not installed at expected location
:exit
pause

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Update: Oops, I accidentally used the wrong folder in the first version of the batch file. I apologize to anyone who downloaded this previously.

The current version of the batch will fix the broken folder created by the previous version, but you will need to re-register Kindle for PC afterwards. Sorry!