I get error message 1935 every time I try to install Lightroom 5, on Windows 7 64bit, AV & Wifi off.
Installation of Lightroom 5 aborts and reverses itself after nearing completion, citing error 1935. Turning off antivirus and WiFi made no difference. Using 64bit Windows 7 as OS. Had an early version of Lightroom installed at one time but I don't see it in the list to uninstall so I assume it is no longer there and not interfering.
Photoshop Lightroom 5.2 64-bit Installer Information:
Error 1935. An error occured during the installation of assembly component {5C21D397-1DA5-3749-8C1F-165F21DE9E3E}. HRESULT: 0x800736B3.
