Today I had to upgrade an old DNN 3.2.2 multiportal installation to DNN 4.8.1. There are 3 major areas that changed in the past DotNetNuke versions: New contstraints and unique indexes on Files table DNN Membership provider Consolidation of http handlers in one assembly

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A frequent question in the forums is "How to upgrade my DotNetNuke install".. I thought i'd post a brief guide here for easy ref

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