Windows7 + media player 12 無法看 hichannel

聽同事說本來好好的 
突然就不能看了 
一直噴出這個錯誤訊息： 
「由於不支援指定的通訊協定，Windows Media Player 無法播放檔案。 請在 [開啟 URL] 對話方塊中，嘗試使用不同的傳輸通訊協定 (例如 "http:" 或 "rtsp:") 來開啟檔案。」 

解決辦法的原文連結：(我也是用 C 解決的！) 
後來查了一下，網路上也有許多人遇過同樣的問題， 
所以就在這裡為大家解答囉：MicorSorf 解答連結 


總共有 A, B, C 三點，可依序檢查，但如果之前都可看且確定網址正常，設定也都沒動過，可直接跳至 C。 
A) If you encountered this error by typing a URL in the Open URL dialog box, try opening the file by using a different transport protocol (for example, "http:" or "rtsp:"). The following list shows the protocols that are supported by the Player and examples of the correct URL syntax: 
‧ mms://server/filename (for example, a file with a .wma, .wmv, .asf, or .mp3 extension) 
‧ http://server/filename 
‧ rtsp://server/filename 
‧ mms://server/sami.asf?SAMI=http://server/sami/sami_demo.smi (SAMI file) 

但通常連結都會是正常的，除非自己耍笨了，所以下面 B, C這裡才是重點！ 
B) If the Player supports the protocol that you used in the URL and you still can't play the content, verify that the Player is configured to use all of its supported protocols. To configure protocol settings 
1. In Windows Media Player, on the Tools menu, click Options. 
2. In the Options dialog box, on the Network tab, in the Streaming protocols area, select all the protocol check boxes (Multicast, UDP, TCP, and HTTP), so that a check mark is displayed in each. Note that the supported protocols can be used only to stream digital media files. Windows Media Player cannot be used as a browser. 

B雖然說了一堆，但平常我們也不會去動這些說定，所以我遇到這個狀況時是用C解決的！ 
C) If the above fixes don't work, you can rename the networking information folder for the Player so that it can rebuild its networking information files after you restart it. To rename the Player networking information folder 
1. Close Windows Media Player. (To do this, on the File menu, click Exit.) 
關掉 Windows Media Player 
2. Click Start, and then click Run. 
按左下角的「開始」->「執行」(或直接按 Win + r) 
3. In the Run dialog box, type the following (exactly as shown): %UserProfile%\Local Settings\Application Data\Microsoft\Windows Media 
在「執行」的欄中填入「%UserProfile%\Local Settings\Application Data\Microsoft\Windows Media」 
4. In this folder, rename the folder 11.0 to 11.0.bak. For more information about renaming folders, see To change the name of a file or folder. 
在出現的資料夾中把 11.0 的資料夾重新命名為 11.0.bak，也有可能出現 10.0 或 12.0 等等，依你 Media Player 的版本而定。 
5. Start the Player and try to stream the content again. 
最後重新啟動 Media Player 就可以囉，這時會發現 4. 的資料夾已重新建立，如果沒問題就可以把 .bak 資料夾刪除了。 

以上就是我搞定「Windows Media Player 無法播放這個播放清單中的任何項目。如需詳細資訊，請以滑鼠右鍵按一下無法播放的項目」的做法， 
供大家參考囉，希望對大家有幫助 :p