Error occurred in deployment step 'Activate Features': The content type with Id [GUID] defined in feature [GUID] was found in the current site collection or in a subsite.
I've got an ambiguous error in visual studio when i re-deployed a content Type for my tasks list. Error : Error occurred in deployment step 'Activate Features': The content type with Id [GUID] defined in feature [GUID] was found in the current site collection or in a subsite. To resolve this problem here is two ways : First solution : * Restract solution. * Close Visual Studio to flush the stale cache. * Open the project in a new instance of Visual Studio and re-deploy the solution. Second solution (if the first doesn't work) : * Re-dploy the project (you may have the error) * Go to Manage Site feature in SharePoint App, and activate and deactivate the feature of the Content Type. * Retract the solution and close visual studio to flush stale cache. * Open the project and redeploy the solution.