For the  Mid Tier to work properly, the ActiveX settings for the XMLHTTP protocol between the browsers and Mid Tier  must be set correctly.

Typically, if you use all the default scripting settings in Microsoft Internet Explorer and Mozilla Firefox browsers, you should not see any problems with the Mid Tier . Otherwise, enable the following ActiveX settings for your browser.

For the Mid Tier  to open windows properly, users must configure their browser or pop-up window-blocking software to allow pop-up windows originating from the web server's address. If your browser has a popup blocker enabled, you will be prompted to disable it when you log on to the Mid Tier . If you do not disable the popup blocker, the Mid Tier  will fail to open a new window or a new dialog box, including expand boxes and currency dialog boxes.

To enable scripting and ActiveX options in Internet Explorer browsers

1. In an Internet Explorer browser, select Tools > Internet Options.
2. Click the Security tab, and click Custom Level.

3. Enable the options listed in the following table.

   Heading	Options
   ActiveX Control and Plug-ins	Run ActiveX Control and Plug-ins Script ActiveX controls Marked Safe for Scripting
   Scripting	Active Scripting
   Downloads	Automatic prompting for file downloads File download
   Miscellaneous	Submit nonencrypted form data (This option is not required if SSL is used.)

While using Mid Tier  on Internet Explorer, if you see the error message — The value of lasttimeCookieUpdated cannot be obtained. Object is NULL or not defined, perform the following steps:

1. Open an Internet Explorer browser.
2. Go to Tools > Internet Options.
3. Select the Advanced tab and disable the following options by selecting the checkboxes:
   • Disable script debugging (Internet Explorer)
   • Display a notification about every script error

Disabling these options does not impact AR System functions.

To enable scripting and ActiveX options in Mozilla browsers

Changing advanced preferences might affect Firefox's stability and security. We recommend you to check with your administrator before making any changes to the settings.

1. Open a Mozilla Firefox browser.
2. In the address bar, type about:config, and press Enter.
3. On the warning page, select Accept the Risk and Continue.
4. Search for the javascript.enabled option and check if the option is set to true.
5. If disabled, use the toggle button to enable the option.

For more information, see JavaScript settings and preferences for interactive web pages .