Issues while accessing registry keys in HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\?

I was trying to install Intel® Hardware Accelerated Execution Manager )HAXM) in silent mode.

As documented I used the following coding:

call %LOCAL_ZIP_DIR%\silent_install.bat -u -log %INST_BATCHES_HOME%\UnInstallationOfHaxm_%AUTO_DATE%_%AUTO_TIME%.log
call %LOCAL_ZIP_DIR%\silent_install.bat -log %INST_BATCHES_HOME%\InstallationOfHaxm_%AUTO_DATE%_%AUTO_TIME%.log

When executing the Installation Batch i faced issues:

1) The uninstallation is not working...The Batch is reporting that HAXM is not installed, which is not true 2) The Installation is failing

After a while i found out that Uninstallation and Installations have issues with the same registry keys:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\

Values in "UserData" could not be read and not be written by the Batch which is calling the uninstallation and the Installation.

Other registry keys could be read:

So this does not seem to be an issue related to missing admin rights.

Any idea what might be the Problem with these Special registry keys? Under which conditions might it not possible to read or write them?

Thanks for a hint.

Best Regards

Frank