403 errors with Upgraded Site

William E. Fisher 1 Reputation point
2022-08-16T16:18:00.217+00:00

Hello, I'm helping with a SharePoint Upgrade from SharePoint Server 2013 to SharePoint Server 2019; most of its gone fine but one site is having issues with Javascript calls and it causes things like the Site Contents page not to load and some functions not to work, other sites we set up are working fine without this issue. It does use an URL that is set up in Alternate Access mappings with both a HTTP and HTTPS options that match the old servers, the other web app that is working has one as well; it does seem to work with the IP oddly enough when that URL is tried. I'm not finding any particular errors in the SharePoint logs or Event Viewer so any help would be appreciated. Thank you

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SharePoint Server Management
SharePoint Server Management
SharePoint Server: A family of Microsoft on-premises document management and storage systems.Management: The act or process of organizing, handling, directing or controlling something.
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  1. RaytheonXie_MSFT 32,081 Reputation points Microsoft Vendor
    2022-08-17T06:41:39.957+00:00

    Hi @William E. Fisher ,
    Please follow the upgrade instructions. The upgrade scenario has not changed in SharePoint Server 2019. There is no direct upgrade path from 2013 to 2019. To upgrade to SharePoint Server 2019, you must upgrade SharePoint 2013 to SharePoint Server 2016, and then upgrade to SharePoint Server 2019. Your databases must be at a SharePoint Server 2016 RTM version or higher when you upgrade to SharePoint Server 2019. Any database with a lower version will be locked and upgrade will not start. The basic steps are:

    On SharePoint Server 2013, use Convert-SPWebApplication to convert from Windows classic authentication to Windows claims (if using Windows authentication and if not previously done during a 2010 -> 2013 upgrade). This is a requirement prior to moving content databases to SharePoint Server 2016.

    On SharePoint Server 2013, use Upgrade-SPSite to upgrade all site collections from V14.5 to V15 mode. This is a requirement prior to moving content databases to SharePoint Server 2016.

    Migrate the CDBs to the new SQL Server supporting SharePoint Server 2016 and attach to an existing Web Application using Mount-SPContentDatabase to upgrade the content databases.

    Once the databases are mounted, move them to the SQL Server supporting SharePoint Server 2019 and again on an existing Web Application, use Mount-SPContentDatabase to upgrade the content databases.


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