Error:
I received the following error while uploading files to a sharepoint document library from an asp.net application.
The security validation for this page is invalid. Click Back in your Web
browser, refresh the page, and try your operation again
Resolution:
Add following lines of code before the Update() method on SPFolder is called.
site.AllowUnsafeUpdates = true;
web.AllowUnsafeUpdates = true;
To create multiple copies of a web application on a webfarm the database backup-restore will not work as the GUID of site will be same. The following process is useful in that scenario:
- Back up using stsadm stsadm -o backup -url <original site url> -filename <backup file path>\db.bak
- Create new web application (and content database) using Central Admin
- Restore (and overwrite) using stsadm stsadm -o restore -url <new site url> -filename <backup file path>\db.bak -overwrite
