When using Offline Servicing to update a Windows 10 OS image the update selection page shows no updates available even if updates have been downloaded and made available to the ConfigMgr SUP, below you can see an image of the issue
This is issue is usually experienced when you are running ConfigMgr 2012 R2 SP1 CU1 or ConfigMgr 2012 SP2 and is caused by a row in one of SCCM database tables that does not contain the correct value table name is SupportedProductsForOfflineServicing
In the image I have highlighted result of querying the SupportedProductsForOfflineServicing table if you are experiencing the described issue value of the Name column will be Windows Next Preview instead of Windows 10.
Microsoft released a private hotfix that can be installed to solve the issue and can be requested and downloaded from here.
For test and educational purposes you can even fix this manually updating the database with the following SQL query
UPDATE SupportedProductsForOfflineServicing SET Name='Windows 10' WHERE Name='Windows Next Preview'
[su_note note_color=”#ffff96″ text_color=”#000000″ radius=”5″]Note: I am providing the above code for educational purposes only and I strongly advice not to manually update ConfigMgr database unless instructed so by a Microsoft Support Engineer. [/su_note]