Adobe Digital Editions

The installer searches for certain antivirus products, and if a qualifying product is not found it prompts to install Norton Security.

To prevent this, add the following registry keys:

reg add HKLM\SOFTWARE\WOW6432Node\Symantec\NPInstaller\DeclineCount\adobeebook /f /v ns /t reg_dword /d 1

reg add HKLM\SOFTWARE\WOW6432Node\Symantec\NPInstaller\DeclineCount\adobeebook /f /v nss /t reg_dword /d 2

and these registry hives:

for x86:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\N360]

for x64:
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\N360]

https://www.itninja.com/software/adobe/digital-editions/4-3939