This post is a contribution from Vitaly Lyamin, an engineer with the SharePoint Developer Support team. SharePoint 2013 allows users to run sites in SharePoint 2010 mode. In this scenario, the solution (WSP) deployment needs to be deployed with the “CompatibilityLevel” flag set to “All” or {14,15}. When deploying the solution from the Central Administration UI, there’s no option to set the “CompatibilityLevel” flag and therefore the deployment job reverts to using the “SharePointProductVersion...(read more)![]()
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