On a 64-bit platform, installed-check fails for SQL Reporting Services and Add-ins. The installer is checking the registry entries under path \"HKEY_LOCAL_MACHINE\\Software\
Right. Accessing an alternate registry view is the answer. Well this will not disable the registry redirection but helps in correct install check.
I've handled this issue in the Installer by forcing it to look into 64-bit Registry View when an install check is made for 64-bit component.
Microsoft has published information on Registry Reflection which includes a description of the KEY_WOW64_64KEY for RegOpenKeyEx.