Web Platform installer: PHP manager for IIS failed on server 2016, error 1603Kasper Kristensen

Web Platform installer: PHP manager for IIS failed on server 2016, error 1603

Error message: “CustomAction VSDCA_VsdLaunchConditions returned actual error code 1603”

Solution:
1. Install .net 3.5
2. Change this registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters\MajorVersion

to value 9 instead of 10

3. open Web Platform installer to reinstall php manager for iis this time it should work

4. set MajorVersion back to 10 again

Kasper Kristensen