Required license is missing: Runtime Sitecore
I am getting this error
Required license is missing: Runtime
I have checked datafolder path
<sc.variable name="dataFolder" value="C:\Path\Data" />
and license file settings
<setting name="LicenseFile" value="$(dataFolder)/license.xml" />
also checked permission all is correct but still it is giving error.
Answer
The most likely cause is a patch file in the include folder that is changing your path. Sometimes this is called "DataFolder.config" and may have the default path set in it, which will overwrite the setting value you might have in another patch config or in the Web.config file.
There are some tools that let you track down config settings without having a working Sitecore instance. I would try out the Config Builder (https://marketplace.sitecore.net/Modules/Sitecore_ConfigBuilder.aspx) which should be able to load up all your config settings and help you track down the problem.