Unable to change the user password on firewall login page

This article provides information on how to  resolve the error "An error has occurred but the cause could not be determined at this time." when trying to change the user password.

This issue can be caused by the following:

1. Browser issue
2. High uptime
3. Old firmware images
4. Configuration on the interface regarding user login
5. Environment issues

Resolution for SonicOS 7.X

This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.

 Browse issue:

• Please check with alternate browsers to see if the issue persists. Can also try using the incognito mode or to delete the cache and cookies from the browser.

High uptime of the firewall:

• Go to Home/Dashboard/System/Device and you will be able to see the uptime of the device. In this situation a reboot is required in order to resolve the issue
  

Old firmware images:

• Please make sure that you are operating on the latest firmware available.
• How to perform a firmware upgrade.

Configuration on the interface regarding the user login:

• If the request for the password change is done via HTTP, it will not be allowed and we will be presented with this error. We will need to redirect the traffic that comes from HTTP to HTTPS.
• Please ensure that the configuration on the interface through which the firewall is accessed is set as follows:

Environment issues:

• This issue can also be caused by the devices that are in between the SonicWall firewall and the PC from witch we make this request (ex: switches, access points)
• In this instance, as a test, a bypass of all the devices is required and to connect the PC directly on the firewall interface.