1. Make sure you are using a supported web browser and operating system (see above)
   • Internet Explorer v.11 users will need to add http://uc.sumtotal.host as a trusted site under Tools>Internet Options>Security>Trusted Sites>Sites
   • If you are using Internet Explorer v.11 or Edge, check for and remove compatibility view settings for sumtotalsystems.com
      
2. Ensure you have either DISABLED pop-up blockers or created an exception so that your browser will allow pop-ups from http://uc.sumtotal.host. (Edge, Chrome, Firefox, IE, Safari)
    
3. Enable Cookies: Each user must have their browser set to enable cookies. You can view this setting in the browser’s security dialog box. Note, some privacy add-ons block cookies.
    
4. Clear your browser's cookies before starting a new eCourse by clearing the history or cache
    
5. *Verify Adobe Flash Player is up to date and enabled. If your browser includes an option to list specific or trusted sites for which Flash is allowed, you might add http://uc.sumtotal.host to the list.
   
   Note: If your browser settings for Flash are set to always ask before running, you must then click to play or allow Flash to run in the course by clicking an icon or notice in the browser window. Certain browsers will always require you to provide explicit permission for Flash to run. Look for an icon to the left or right of the address field at the top of the browser window.
   
   *This applies strictly to courses that still require Flash. Courses published since 2018 or later should not require it. Flash will no longer be supported after 2020.
    
6. 加速器下载 上外网t JavaScript is enabled in your web browser. (IE, Chrome, Safari)
    
7. Do not leave eCourses paused for extended periods of time. If you need to step away, exit the course until you can return. Leaving a course paused for too long may prevent it from reporting progress back to the system server.
    
8. 内网穿透：在公网访问你家的 NAS - V2EX:2021-2-27 · Linux - @skywind3000 - 家里 Nas 中安装了一系列服务，如果外网访问不了，手机上连不上，就十分不方便。所以我们需要内网穿透，方法主要有两个：动态域名和反向代理，下面对比一下：## 动态域名最早期的方法，要求 from the course menu when available. If needed, wait for the course to indicate it is okay to close the browser window before doing so. Closing the window too soon may prevent the course from reporting progress back to the system server.
    
9. Save a screenshot of your quiz results and/or completion confirmation screen.
    
10. Plug-Ins, Extensions, or Toolbars: If you have installed any add-ons, plug-ins, or toolbars in your browser, especially those designed to protect privacy, these may interfere with the system's ability to record your progress and/or eCourse functionality. You may want to disable them while attempting to complete online courses or use a browser without such.

In general, the UC Learning Center supports the CURRENT and the previous TWO versions of the browsers listed below.

¹The LMS does not support Internet Explorer or Microsoft Edge in Compatibility Mode.

• The UC Learning Center supports operating systems that run the browsers listed above.
• Devices must have a screen resolution of at least 1024x768.

Additional requirements in all browsers include:

• Pop-Ups allowed
• Cookies enabled
• JavaScript enabled
• Adobe Flash Player* installed/updated and enabled (Ask first recommended) — consult your browser's support documentation as Flash settings may change from version to version

*Adobe Flash Player will reach the end of its life in December 2020. UCR is in the process of removing Flash-dependency from eCourses. Most browsers now block Flash by default and users may need to give permission for it to run each time they launch a Flash-dependent course.