- Open the site in SharePoint Designer
- Go to Master Pages.
- You will see different master pages. Your custom master page is set to default automatically when you deploy the site definition. Right click default.master and select “Set as Default Master Page”.
Figure 1: Set as Default Master Page
- If we install site definitions (created in SharePoint 2007) directly in SP 2010, the interface is totally messed up (because it uses new SharePoint interface) and we have to revert to the old v3 interface (using steps shown above).
- If we upgrade SharePoint 2007 sites to SP 2010 (using attach DB method), the sites use old v3 interface by default but if we visually upgrade them to use v4 interface, they seem to work fine. No issues!