Hi,
I'm running into a strange situation where a user who had contribute permissions on a site when it was on a SharePoint 2010 farm no longer had access to the site once it was upgraded to SharePoint 2013. We just did a standard detach/re-attach and ran the Mount-SPContentDatabase command to upgrade the content database to SharePoint 2013.
The user still appears on the <a href="http:///_layouts/user.aspx">http://<webapp>/_layouts/user.aspx page, but they get an error when they try to visit the upgraded site on the SharePoint 2013 farm. I've tried modifying their permissions, for example changing their permission level from contribute to full control, but they still get an error. Its only when I add them to the site collection administrators group that they can access the site again, but I don't want to grant them that level of access.
Has anyone seen this behavior on an upgrade and/or know of a solution? Thanks.
