Update - It seems the Cisco Netscaler is causing the problem. Now I have server access (and bypassed the NLB by going direct to the WFE) then everything is working again
Solution - It seems Cisco Netscaler had "Intelligent Filtering" enabled which detected every HTTP POST which contained HTML in the body as a Script Injection Attack and blocked it .. sigh
Weird issue I am facing.
I have a SharePoint 2013 SP1 Enterprise farm running with three load balanced Web Servers (through a Cisco Netscaler). We are using Sticky Sessions (Cookie Based sessions falling back to IP based if cookies are unavailable)
The strange behaviour is that everytime I try to modify a Rich Text Field and hit "save" then I am redirected to the site home page. If I don't modify the Rich Text Field then it works fine (and I can happily edit any other properties). There is nothing in Fiddler showing except an immediate 302 redirect to "/".
This happens with both Publishing Pages as well as custom lists (which have Rich Text Fields).
- This happens with "out of the box" sites with no customisations applied
- We are using both FBA and Windows Authentication with the standard Sign-In Pages
- The error is observed with both FBA and Windows users
- This is observed in all Site Collections
We have numerous DEV / TEST boxes running the same setup, but none of them are displaying this behaviour.
Does anyone have any idea why this is happening?
Edit - I have since tried removing FBA (so it is Windows Auth only) and have removed two of the Web Servers (so we only have a single Web Server in the NLB). Still having exactly the same error
Further Edit - I have checked the ULS logs. Apart from a load of "Search not found" errors (I am not running a Search Service on this farm) there is nothing about any kind of errors. Fiddler2 just shows an immediate 302 response from the HTTPS POST event.