If you set Windows Media Player as the default digital media player for an audio or video file type but a different player or program opens that file type instead, one of the following situations may have occurred:

• Another program that competes for audio and video file types, for example .mp3 or .mpg, may have "taken over" that file type, even after you associated the file type with the Player. This program may use registry monitoring to maintain the file-type association. If this happens, you may be able to remove the file-type association in the other program. For more information, see the documentation for the program that has taken over the file-type association.
• A program, such as a Web browser, may use its own file-type association methods to change the default program for a file type. In this case, you can use the configuration options provided by that program to change the file-type association back to Windows Media Player. For more information, see the documentation for that program.
• In Windows Explorer, you may have used the Open With command to open a file with a different program, and on the Open With dialog box, you may have selected the check box. Always use the selected program to open this kind of file. In this case, you can use the same Open With command to change the file-type association back to Windows Media Player. To do so, right-click a file, point to Open With, and then click Choose Program. On the Open With dialog box, click Windows Media Player, and then select the check box. Always use the selected program to open this kind of file.

Why can't I see the video when I'm playing a video file?

If you can hear the audio, but can't see the video in Windows Media Player, two scenarios are possible:

1. I never see video
   If you're playing an AVI file, it's possible that the video codec required to decode and display the video is not installed on your computer. To determine which codec was used to create the file, do the following:
   1. Use a codec detection utility to determine the FourCC code of the file.
   2. Look up that FourCC code on the FourCC for Video Compression Web page or in the codecs section of the FourCC Web site.

   After you determine which codec is required, you can then download the correct codec from the Internet. The Windows Media Player Multimedia File Formats Web page provides links to suppliers of some of the more frequently used video codecs for AVI files. However, keep in mind that some codecs can introduce instability with programs or your computer in general, so make sure that a codec is from a trustworthy source before downloading and installing it.

2. I see video, but only for a few seconds
   If you find that video disappears or turns a different color, turn off video overlays by doing the following:
   1. In Windows Media Player, on the Tools menu, click Options, and then click the Performance tab.
   2. Click the Advanced button.
   3. In the Video Acceleration area, clear the Use overlays check box

   If the problem continues, try turning off the video mixing renderer (VMR) by clearing the Use video mixing renderer check box, located just above the Use overlays check box.
   If you can restore the missing video by doing something like maximizing the Player or putting another window in front of it, there may be a problem with your video card driver. For more information about this issue, see the question, "Why does my video stop or disappear after a few seconds of playing?" in the Media Advice archive.

My question about Windows Media Player isn't answered in this FAQ. What can I do?

If you do not find an answer to your question in this FAQ, try the following resources:

• See Windows Media Player Help. To access Help, start Windows Media Player and then press F1.
• For other Windows Media FAQs, including other versions of the Player, see Frequently asked questions about Windows Media.
• To find additional support and troubleshooting resources, see Troubleshooting Windows Media Player.

How to Allow Popup Windows for Internet Explorer:

1. Go to the Tools menu.
2. Select Pop-up Blocker.
3. Click Pop-up Blocker Settings.
4. In the Pop-up Blocker Settings window, type appatraining.fusionapps.net/  as the "Address of Web site to allow" and click the Add button.
5. Close the Pop-up Blocker Settings window and all Internet Explorer windows.

How to Allow Popup Windows for Firefox:

1. On Windows, open the Options dialog under the Tools menu. On Macintosh, open the Preferences dialog under the Firefox menu.
2. Click the Web Features icon on the left.
3. Here you should see a checkmark next to the option to block popup windows. Click the Allowed Sites button to the right of it.
4. Type appatraining.fusionapps.net/ as the "address of web site," then click the Allow button
5. Click OK in the Allowed Sites screen, then click OK again for the Options/Preferences screen.

How to Allow Popup Windows for Mozilla:

1. Open the Preferences dialog under the browser's Edit menu.
2. Scroll down to the Privacy & Security Category in the left column and expand it by clicking on the arrow.
3. Click on the Popup Windows topic.
4. Here you should see an option selected to block unrequested popup windows.
5. Click the Allowed Sites button to the right of it.
6. In the Add field, add appatraining.fusionapps.net/, and click the Add button.
7. Click OK in the Allowed Sites screen, then click OK again for the Preferences screen.