I have SharePoint 2010 installed in a lab and have encountered an error:
"The security validation for this page is invalid. Click Back in your Web browser, refresh the page, and try your operation again."
This occurs when trying to modify a list's view in order to change a default sort order and possibly other properties on that list. I read that one can disable validation in Central Admin > Web Applications > General Settings, and that although
this is not recommended, it did allow me to save modifications to a view. Unfortunately, switching security validation off causes the Silverlight popups that allow creating new document libraries, pages, etc no longer works. The error is:
"Error, An unhandled exception occurred in the Silverlight Application"
There are no features, or other custom code running. This is a plain install of SharePoint 2010.
This seems to be happening on the My Sites site collection. When I am logged in as the farm admin, I don't receive this error. But if I am logged in as normal user, who does have site ownership - full control - the error occurs.
My environment is configured like:
http://lab.contoso.com - Top level publishing site
http://lab.contoso.com/members/sites - My Sites (members is a managed
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