Unable and Cannot Connect to WPA and WPA2 Encrypted Wireless Wi-Fi Network in Windows XP不能和無法連接到WPA和WPA2無線加密的Wi - Fi網絡，在Windows XP
After configuring the security settings of a wireless 802.11a/b/g router or access point (AP) to enable WPA or WPA2 encryption with a Pre-Shared Key (PSK or WPA-Personal/WPA2-Personal), or Radius Server (WPA-Enterprise/WPA2-Enterprise), Windows XP machine cannot or unable connect to the WPA security-enabled wireless network (although Windows XP is able to scan and detect the availability of the Wi-Fi network) with the following error message:後配置的安全設置一個802.11無線路由器或接入點（ AP ） ，以啟用WPA或WPA2的加密與預共享密鑰（或wpa-personal/wpa2-personal的PSK ） ，或RADIUS服務器（ WPA的-enterprise/wpa2-enterprise ） ， Windows XP的機器不能或無法連接到WPA安全功能的無線網絡（雖然Windows XP是能夠掃描和檢測提供Wi - Fi網絡）與以下錯誤消息：
Windows is unable to connect to the selected network. Windows是無法連接到選定的網絡。 The network may no longer be in range. 網絡可能不再在範圍內。 Please refresh the list of available networks, and try to connect again. 請刷新列表可用網絡，並嘗試再次連接。
WPA (Wi-Fi Protected Access) and WPA2 (RSN Robust Security Network or IEEE 802.11i-2004) is more secure encryption algorithm for wireless or WiFi network, especially WPA2, which introduces new AES-based algorithm, CCMP encryption which is considered fully secure.的WPA （ Wi - Fi保護訪問）和WPA2 （ rsn堅強有力的安全網絡或的IEEE 802.11i - 2004年）是更安全的加密算法，用於無線或WiFi網絡，特別是WPA2的，其中介紹了新的AES基於算法， ccmp加密這是充分考慮安全。 WPA2 certification is now mandatory for network devices to be certified by Wi-Fi Alliance as “Wi-Fi CERTIFIED”. WPA2認證是強制性的，現在的網絡設備認證由Wi - Fi聯盟“ Wi - Fi認證” 。
The Windows XP (with or without SP1) system does work properly and connect perfectly to the wireless network if the router, WAP (wireless access point) is configured to enable and use WEP 64-bit/128-bit/225-bit security encryption, which is less secure than WPA2 and WPA.在Windows XP （有或沒有SP1 ）的系統是否正常工作和完美的連接到無線網絡，如果路由器， WAP （無線接入點）是配置為啟用和使用WEP 64-bit/128-bit/225-bit安全加密，這是安全性並不比WPA2和WPA的。 Beside, in Windows XP SP1 computer, the WPA encrypted wireless network can be connected without error too.旁邊，在Windows XP SP1的計算機上， WPA的加密無線網絡可以連接沒有錯誤太多。 The error only surface on pre-SP2 Windows XP on both WPA and WPA2 protocols, and WPA2 on Windows XP SP2.錯誤的，只有表面上SP2之前的Windows XP中就雙方WPA和WPA2協議，和WPA2在Windows XP SP2上。
By default, Windows XP does not has native support for WPA in Windows XP (which only added via默認情況下， Windows XP不會有本土的支持WPA的在Windows XP中（其中只有補充，通過 KB815485 WPA support patch kb815485的WPA支持補丁 and via Service Pack 2), and no native support for WPA2 until Windows XP SP3.和VIA Service Pack 2中） ，並沒有本土的支持WPA2的，直到Windows XP的SP3中。 To verify that the unable or cannot connect to the wireless network is indeed cause by lack of support in Windows XP, right click on the Network Connections icon on the system tray (notification area), then go to Wireless Network tab.以驗證該不能或無法連接到無線網絡確實是事業因缺乏支持在Windows XP中，右擊網絡連接的圖標，系統托盤（通知區域） ，然後轉到無線網絡選項卡。 Select or manually add in the SSID for the wireless network, then click on Data Encryption option.選擇或手動添加在的SSID為無線網絡，然後點擊數據加密選項。 If Windows XP supports WPA and WPA2, you will see its options appear in the drop-down list, in addition to usual WEP.如果Windows XP支持WPA和WPA2 ，您會看到其選項出現在下拉式清單中，除了慣常的WEP 。
To let Windows XP pre-SP2 system provides support for WPA WiFi network security encryption method, download and install讓Windows XP的SP2之前的系統提供了支持WPA的無線網絡安全的加密方法，請下載並安裝 KB815495 kb815495 ( （ KB article KB文章 ), or upgrade to ） ，或升級到 Windows XP SP2在Windows XP SP2 . 。
To provides operating system support for WPA2, download and install the newer以提供作業系統，支援WPA2的，請下載並安裝較新的 KB917021 kb917021 Wireless Client Update for Windows XP with Service Pack 2 (validation required at無線客戶端更新為Windows XP Service Pack 2的（必要的驗證，在 Microsoft Download Center Microsoft下載中心 , or user can direct download the ，或用戶可以直接下載 WindowsXP-KB917021-v3-x86-ENU.exe windowsxp - kb917021 - v3的- x86的enu.exe ) or older ）或以上 KB893357 kb893357 Wi-Fi Protected Access 2 (WPA2) and Wireless Provisioning Services Information Element (WPS IE) update for Windows XP SP2 (validation required at Wi - Fi保護訪問2 （ WPA2 ）以及無線配置服務信息元素（ WPS IE ）更新適用於Windows XP SP2 （在必要的驗證 Microsoft Download Center Microsoft下載中心 , or user can direct download the ，或用戶可以直接下載 WindowsXP-KB893357-v2-x86-ENU.exe windowsxp - kb893357 -的V2 - x86的enu.exe ) or more recommended, upgrade to ）或以上建議，請升級到 Windows XP SP3 Windows XP的SP3的 , which now incorporates the WPA2 hotfix and implements the WPA2 IEEE 802.11i wireless networking standard natively. ，它現在包含了WPA2的修補程序和實施的WPA2的IEEE 802.11i無線網絡標準natively 。
After installing the WPA and/or WPA2 support into Windows XP and restarting the computer, if the system has a client wireless card with WPA/WPA2-capable firmware and WPA/WPA2 drivers, Wireless Zero Configuration (WZC) displays a WPA2 designation when user view the available wireless networks.安裝後的WPA和/或WPA2的支持到Windows XP ，並重新啟動電腦，如果系統有一個客戶端的無線網卡與wpa/wpa2-capable固件和wpa/wpa2司機，無線零配置（ wzc ）顯示的WPA2指定當用戶查看可用的無線網絡。 For example, Security-enabled wireless network (WPA) and Security-enabled wireless network (WPA2) , instead of just plain “Security-enabled wireless network”.舉例來說， 安全性，使無線網絡（ WPA的）和安全功能的無線網絡（ WPA2的） ，而不是只平原“安全啟用無線網絡” 。
As mentioned just now, operating system support for wireless security protocol especially WPA2 is just a piece of the jigsaw puzzle.正如剛才所說，作業系統，支援無線安全協議，特別是WPA2是剛才一塊的拼圖遊戲。 The PC must also has client wireless card, or built-in wireless receiver, or Wi-Fi network adapter that supports WPA and WPA2.籌委會還必須有客戶端的無線網卡，或內置的無線接收器，或Wi - Fi網絡適配器，支持WPA和WPA2 。 If you just bought the wireless network adapter recently, chance are the WLAN adapter will support WPA and WPA2 by default.如果你只是買了無線網絡適配器最近，機會是無線局域網適配器將支持WPA和WPA2默認情況下。
If after installing the WPA2 (or WPA) update hotfix or latest service pack in Windows XP, yet WPA or WPA2 is still unsupported and system unable to connect to wireless network, check the website of the WLAN adapter or wireless card for any new updated WLAN driver that capable of enabling WPA and WPA2 functionality on the WiFi receiver adapter card.如果在安裝的WPA2 （或WPA ）更新修補程序或最新的Service Pack在Windows XP中，尚未的WPA或WPA2是仍然不受支持和系統無法連接到無線網絡，檢查該網站的無線局域網適配器或無線網卡任何新的更新無線局域網驅動程序，能夠使WPA和WPA2功能，在WiFi接收適配卡。 Some WLAN adapter may require a firmware update to support WPA and WPA2.一些無線局域網適配器可能需要一個固件更新，支持WPA和WPA2 。
If you have an old wireless card that the only option available is WEP, and has no updated driver for it, then WPA/WPA2 won’t work simply because the WLAN adapter does not support it.如果你有一歲的無線卡，這種卡的唯一選擇是WEP的，並沒有更新的驅動程序的話，那麼wpa/wpa2將不會工作，只是因為無線局域網適配器不支持它。 In this case, fallback to WEP encryption, or get a new wireless adapter.在這種情況下，後備，以WEP加密，或得到一個新的無線適配器。
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原來的英語文章 whenever possible.只要有可能。
Share and contribute or get technical support and help at分享和貢獻，或取得技術的支持和幫助，在 My Digital Life Forums 我的數字生活論壇 . 。
Related Articles相關文章
- New CDR-350 Router To Convert Cellular to WiFi Broadband Access新的CDR - 350路由器，轉換蜂窩無線寬帶接入
- Network Ports Used by Windows Product Activation (WPA) for Communication使用的網絡端口Windows產品激活（ WPA ）的溝通
- Edimax Unveiled Wireless 802.11n USB Adapter with MIMO Technology edimax推出的802.11n無線USB適配器與MIMO技術
- Unable to Connect to Internet in Virtual PC with NAT Shared Networking NAT on Windows XP Guest無法連接到互聯網的虛擬PC與NAT的共享網絡的NAT在Windows XP客戶
- Using Jeyo Mobile Companion 1.1 on Windows Vista Trick使用傑傲移動伴侶1.1在Windows Vista的伎倆
- CradlePoint Unveiled Portable Router to Convert 3G to WiFi Broadband Access cradlepoint推出的便攜式路由器，轉換為3G到無線寬帶接入
- Hotspot Shield (AnchorFree) - Free Secure and Private VPN for Public WiFi熱點盾（ anchorfree ） -免費安全和私人的V PN，供公眾W iFi服務
- Jeyo Mobile Extender Not Connected to Mobile Device in Outlook 2007 and Vista傑傲移動Extender的未連接到移動設備在Outlook 2007和Vista
- Millions Unable to Login to Skype Due to Software Glitches數百萬無法登錄到Skype的因軟件故障
- Reinstall and Reset TCP/IP (Internet Protocol) in Windows Vista, 2003 and XP重新安裝和重置TCP / IP （互聯網協議）在Windows Vista中， 2003和XP
