Do you know that you need to migrate 'custom site template' before upgrade to SharePoint 2013 UI?

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If you have “custom site template” for your site, you can’t upgrade your site to the SharePoint 2013 UI unless you have a site template with the same name ready for new UI.

![](/uploads/rules/do-you-know-that-you-need-to-migrate-custom-site-template-before-upgrade-to-sharepoint-2013-ui/missingSiteTemplateError.jpg)

Figure:SharePoint will show you an error “Missing Site Templates” that prevents you from upgrading
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To fix this issue

1. Upgrade your site template’s **content** files and **definition** XML file to SharePoint 2013 (refer to SharePoint 2013 default site template for details).
2. Package the site template’s **content** files to map location “ **{SharePointRoot}\Template\SiteTemplate** ”.

> ![](/uploads/rules/do-you-know-that-you-need-to-migrate-custom-site-template-before-upgrade-to-sharepoint-2013-ui/siteTemplateStructure.jpg)
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> 3.Package the site template’s **definition** XML file to map location “ **{SharePointRoot}\TEMPLATE\1033\XML** ”.

> ![](/uploads/rules/do-you-know-that-you-need-to-migrate-custom-site-template-before-upgrade-to-sharepoint-2013-ui/siteTemplateDefinitionFile.jpg)
> 4.Deploy the package.

> 5.Try to upgrade to SharePoint 2013 UI again.