I am experiencing difficulties with a custom installation of Xibo CMS 1.8.11. I have installed it on a Windows Server 2012 environment, and am using PHP v5.6 on IIS 7.5. Whenever a new user is attempting to log on they will experience the following error upon a successful login: Sorry the form has expired. Please refresh.
After some period of time, it will allow the user to sign in and they will be able to work inside of the CMS as originally intended. This period of time can span between a couple hours, to a couple days. I cannot find anything in the log table, nor in the server logs that points to any specific cause for this.
EDIT: We have tried this on Firefox, Internet Explorer 11, and Edge.
Attached is a picture of the console while trying to troubleshoot this issue.