We are sincerely sorry for this issue.
Here is a workaround from other users:
The Kindle app can be aggressive about updating itself to the latest version. Even after the option to automatically install updates is deselected the software sometimes will update itself unexpectedly. Here are some tips on preventing this:
If the program updates to an undesired version then run it and uncheck the setting to automatically install updates under
Tools->Options->General and save preferences before uninstalling.
Once the desired Kindle version has been reinstalled go to the setting to automatically install updates, check and then uncheck it again, and save preferences.
When running the app if a dialog pops up indicating that a newer version is available chose the option to "skip this version".
The re-installation process may need to be repeated multiple times before the desired version will stick.
@Linda, Thank you!
The windows batch file in the MobileRead 4051217 post is working perfectly for me so far*; I'm using an older Kindle version (v1.17.44170) for purposes of seamless DRM removal (decryption) and conversions [to ePub format] via epubor.
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*NOTE: I also verified the batch file code content to ensure it's safe for use (which it currently is).
FYI: The script simply navigates to %LocalAppData%\Amazon\Kindle , deletes the 'updates' directory, and creates a placeholder/dummy file called 'updates".
I'm stuck, any suggestions?