Disable TCP Auto-Tuning to Solve Slow Network, Cannot Load Web Page or Download Email Problems in Vista禁用的TCP自動調諧，以解決慢速網絡，無法載入網頁或下載電子郵件的問題，在Vista

When Windows Vista is connected to high speed broadband Internet connection, there may be some incompatibilities and conflict problem or error such as the following:當Windows Vista連接到高速寬帶互聯網連接，可能會有一些不兼容和衝突的問題或錯誤，如下列：

• Poor intermittent network performance.窮人的間歇性的網絡性能。
• Slow network loading.慢速網絡負荷。
• Unable to open and load some websites or webpages using Internet Explorer or Firefox, where the blue loading bar keeps running for a long time, but the pages fail to load.無法打開和負載一些網站或網頁使用Internet Explorer或Firefox ，那裡的藍色加載酒吧不斷運行相當長的時間，但頁面裝載失敗。
• Java applets fail to download and open. Java applets的失敗下載並打開。
• Cannot receive email or download from POP3 mail server by email clients such as Thunderbird.無法接收電子郵件或下載的POP3郵件服務器的電子郵件客戶端，例如Thunderbird的。 No mail arrived although users may see the message “receiving 1 of 3 messages”, and eventually the receiving process will time out with the error number 0×800CCC19 timeout.沒有郵件抵達，雖然用戶可能會看到消息“接收1 3的訊息” ，並最終接收的過程中會的時間與錯誤號碼0 × 800ccc19超時。
• Slow email sending or retrieval using Thunderbird and other clients.緩慢，電子郵件發送或檢索使用Thunderbird和其他客戶。

The symptoms exist due to the new re-written TCP stack in Windows Vista that aims to take full advantage of hardware advances such as gigabit networking.症狀存在，由於新的轉口書面的TCP棧在Windows Vista ，目的是為了充分利用硬件的進步，如千兆位網絡。 Among the new feature in Windows Vista TCP/IP is Receive Window Auto-Tuning Level for TCP connections.其中的新功能在Windows Vista中的TCP / IP是接收窗口自動調諧水平的TCP連接。 TCP AutoTuning enables TCP連接自動調諧，使 TCP window scaling的TCP window scaling by default and automatically tunes the TCP receive window size for each individual connection based on the bandwidth delay product (BDP) and the rate at which the application reads data from the connection, and no longer need to manually change TcpWindowSize registry key value which applies to all connection.默認情況下，並自動調TCP接收窗口的大小為每一個人連接的基礎上，帶寬拖延產品（發展局）和速度，其中讀取數據的應用，從連接，不再需要手動更改TcpWindowSize登錄的關鍵價值，適用於所有的連接。 Theoretically, with TCP auto-tuning, network connection throughput in Windows Vista should be improved for best performance and efficiency, without registry tweak or hack.理論上，使用TCP自動調諧，網絡連接的吞吐量在Windows Vista中應加以改善為最佳性能和效率，沒有註冊表調整或開刀。 However, this is not always the case, and may cause some Internet related issues and problems.不過，這是情況並非總是如此，並可能導致一些與互聯網有關的問題和困難。

The workaround or solution to the above problem is to disable the TCP/IP AutoTuning in Windows Vista.其他可行方案或解決上述的問題是要禁用TCP / IP的自動調諧在Windows Vista中。 Disabling auto tuning of TCP Windows Size should not cause any negative effects, only that TCP Window Size will always at default value without ability to optimization to each connection.禁用自動調諧的TCP的Windows大小，應不會造成任何負面影響，只是TCP窗口大小將始終處於默認值沒有能力優化，以每個連接。 Anyway, if there is any side effect after turn off auto tuning, simply re-enable back it.無論如何，如果有任何副作用後，關閉自動調整，只需重新啟用它備份。

Check the state or current setting of TCP Auto-Tuning 檢查的國家或目前的設定的TCP自動調諧

1. Open elevated command prompt開放提升的命令提示符 with administrator’s privileges.與管理員的特權。
2. Type the following command and press Enter:鍵入以下命令，並按下ENTER ：

   netsh interface tcp show global在netsh界面的TCP顯示，全球

   The system will display the following text on screen, where you can check on the Auto-Tuning setting:該系統將顯示以下文本在屏幕上，您可以在這裡檢查就自動調諧設置：

   Querying active state…查詢活躍的國家…

   TCP Global Parameters全球的TCP參數
   ———————————————- ----------------
   Receive-Side Scaling State : enabled接收方結垢狀態：啟用
   Chimney Offload State : enabled煙囪卸載狀態：啟用
   Receive Window Auto-Tuning Level : normal接收窗口自動調諧水平：正常
   Add-On Congestion Control Provider : none添加擁塞控制供應商：無
   ECN Capability : disabled ECN的能力：殘疾人士
   RFC 1323 Timestamps : disabled RFC 1323所時間戳：殘疾人士

Disable TCP Auto-Tuning 禁用的TCP自動調諧

1. Open elevated command prompt開放提升的命令提示符 with administrator’s privileges.與管理員的特權。
2. Type the following command and press Enter:鍵入以下命令，並按下ENTER ：

   netsh interface tcp set global autotuning=disabled在netsh界面的TCP設置全球自動調諧=禁用

Enable TCP Auto-Tuning 啟用TCP自動調諧

1. Open elevated command prompt開放提升的命令提示符 with administrator’s privileges.與管理員的特權。
2. Type the following command and press Enter:鍵入以下命令，並按下ENTER ：

   netsh interface tcp set global autotuning=normal在netsh界面的TCP設置全球自動調諧=正常

IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要說明 ：這是一個機器翻譯網頁是“按原樣”提供的擔保。 Machine translation may be difficult to understand.機器翻譯可能很難理解。 Please refer to請參閱 original English article英文原版的文章 whenever possible.只要有可能。

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This entry was posted on Thursday, March 22nd, 2007 at 12:21 am and is filed under 此項目被張貼在週四， 2007年3月22日在上午12時21分，並提交下 Windows Vista Windows Vista的 . 。 You can follow any responses to this entry through the 您可以按照任何的反應，此項目通過 RSS 2.0 2.0 feed. 餵養。 You can 您可以 leave a response 留下的回應 , or ，或 trackback Trackback跟踪 from your own site. 從你自己的網站。