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[danielw]

Hey there,

I get the "A possible CSRF attempt was detected. No referer was provided by the server." message when I log into the manager with FF, but when I try it with IE7 it works fine.

First thought was that the culprit must be the cache. So cleared the FF cache and the MODx cache. No change.

I then tested switching off the usual suspect add-ons (e.g. Firebug) but to no avail.

I switched the "Validate HTTP_REFERER headers?" option to NO in the config (using IE). But still no dice in FF.

Any ideas?

[rthrash]

Did you ever sort this out? Try re-running the installer in upgrade mode after moving a clean set of files in (saving any extra snippets and moving a copy of the config file over)?

[danielw]

Seems to be OK for the moment. Uploaded a fresh cache file and did an upgrade install. Will let you know if anything breaks.

EDIT. And something does. When I set the click the "Don't show this warning again" in the Configuration tab, it sets the database value for system_settings to "00".

[nihonsei]

Method 1:

1. Disable your Antivirus software(ex. Nortan Internet Security)
2. Delete all cookies and refresh Internet Explorer
3. Try to login
4. If you successfuly login to Modx, Go to Tools Menu -> Select Configuration.
5. In System Configuration -> select Site.
6. In Site menu please select 'No' radio under "button Validate HTTP_REFERER headers?" and Save.
7. Enable your Antivirus software.

or
Method 2:
Set mannualy database system_settings to 0

or
Method 3:
If you want to use Yes option for "Validate HTTP_REFERER headers?". Please disable your antivirus software (Nortan Internet Security). You can work with Modx in Validate HTTP_REFERER headers mode.

Good luck.

Nihonsei

[Ysanmiguel]

My Friend if Modx Works fine in IE, Crome etc... and only have problems in Firefox... that is the problem Firefox!!

so is just configuration.

1. Type “about:config” in the location bar, and press Enter.
2 In the filter box, type “referer” and press Enter. This should leave you with one preference, network.http.sendRefererHeader. This is probably set to 0.
3 Right click on network.http.sendRefererHeader and select “Modify”
 
- Just change it to 2

and thats all. 

Are just some things about security in firefox...

I HOPE THAT WORKS FOR YOU TOO, MORE INFORMATION HERE:

http://www.belafontecode.com/fix-modx-csrf-error-in-firefox/