If the Chrome extension asks for username and password again after you select a server, do not enter your normal app login password directly.

In this case, you should usually enter your compatibility password to verify the server again.

Recommended steps:

1. Enter your account username first.
2. If the popup is a server verification window, enter your compatibility password.
3. After verification succeeds, the extension will usually continue the connection.

Why does this happen?

The old Chrome extension workflow relied on older extension network APIs to handle authentication and request interception. In newer Chrome versions, extension permissions and interception behavior have changed, so the old method may no longer complete authentication automatically in some cases. That is why a verification popup may appear and require manual confirmation.

According to Chrome's official documentation:

• In Manifest V3, webRequestBlocking is no longer available to most extensions: Chrome webRequest API
• Chrome's migration guide also explains that blocking request listeners should be replaced with the newer declarative model: Replace blocking web request listeners
• Authentication handling (onAuthRequired) also depends on related extension permissions: Handling authentication

Please note:

• This browser extension method is only a legacy compatibility solution and is not recommended as your main long-term setup.
• For better stability, we recommend using the latest 5UF VPN app.
• If the verification popup keeps appearing, make sure you are entering the compatibility password, not your normal app login password.

If 5UF VPN reports VCRUNTIME140_1.dll is missing, install the official Microsoft Visual C++ Redistributable below. Do not download DLL files from unofficial sites.

---

❗️Encountering This Error? Follow These Steps to Fix It

If you see the error message below, don’t worry. Simply follow the steps provided to resolve the issue quickly and easily.

✅ Step 1: Go to the Official Microsoft Download Page

? Visit this official link:
? https://learn.microsoft.com/zh-cn/cpp/windows/latest-supported-vc-redist?view=msvc-170

This page contains the latest supported Visual C++ Redistributable installers.

---

✅ Step 2: Download the Correct File for Your Device

Scroll down to the section:

“Visual C++ Redistributable v14"

Then download the version(s) based on your system:

✅ Tip: If you're not sure, install both files to ensure full compatibility.

---

✅ Step 3: Install the Redistributables

1. Run each.exefile you downloaded

2. Follow the installation prompts

3. Restart your computer once finished

---

✅ Step 4: Launch 5UF VPN Again

After restarting:

• Double-click to launch the 5UF VPN client

• The app should now start normally without any DLL errors

---

❌ Important Warning

Do not download DLL files from third-party websites — they may contain malware or be outdated.
Always use the official Microsoft source linked above.

Check Your Wi-Fi Speed with Ease

With our app, you can instantly monitor your personal Wi-Fi speed. On the right side of the screen, you’ll see real-time performance indicators showing how your connection performs across various locations worldwide.

• Before VPN Connection:
  If the indicators appear mostly in red or yellow, this means your base internet connection is slow. In such cases, connecting to the VPN will not increase your speed—it will reflect the limitations of your current network.

  

• After VPN Connection:
  Click on the bar graph to view your IP address and track how it changes as you connect to different VPN locations. This allows you to quickly identify whether any issues are related to your ISP or the VPN connection itself.

  

• Refresh Any Location:
  Simply tap on a location to refresh its status and get updated performance data.

Adding 5UF to Control Center (iOS – Edit)

The following procedure outlines how to add the 5UF application to your Control Center, enabling immediate VPN activation directly from the system interface.

---

Step 1 — Access the Control Panel

Swipe downward from the top-right corner of the display to reveal the Control Center.

---

Step 2 — Enter Edit Mode

Click the edit button on the top right corner of the screen to enter edit mode.

 

---

Step 3 — Add the 5UF Control

Select the 5UF application from the available buttons at the bottom of the screen to add it to the control panel.

---

Completion

Once the control has been added, the 5UF VPN can be activated instantly by tapping the 5UF icon within the control panel.

Adding 5UF to Control Center (iOS – Add Control)

The following procedure outlines how to add the 5UF application to your Control Center, enabling immediate VPN activation directly from the system interface.

---

Step 1 — Access the Control Panel

Swipe downward from the top-right corner of the display to reveal the Control Center.

---

Step 2 — Enter Edit Mode

Press and hold any unoccupied area within the control panel, then select “Add a Control” from the options displayed at the bottom of the screen.

---

Step 3 — Add the 5UF Control

In the search field located at the top of the interface, type “5UF”.
Select the 5UF application from the search results to add it to the control panel.

---

Completion

Once the control has been added, the 5UF VPN can be activated instantly by tapping the 5UF icon within the control panel.

In 5UF VPN, Global mode and Partial mode describe how much of your traffic goes through the VPN.

Global mode:

• Most system traffic goes through the VPN.
• Good for users who want a more consistent VPN route.
• Also more suitable for apps that do not support proxy mode well.

Partial mode:

• Only selected websites, apps, or rule-based traffic goes through the VPN.
• Other traffic continues to use the local network directly.
• Useful when you only want specific traffic to use the VPN.

How should you choose?

• If you are not sure, Global mode is usually the simpler starting point.
• If you only want a small part of traffic to use the VPN, choose Partial mode.

The naming may vary slightly on different platforms, but the core idea is the same.

If you want VPN to open automatically after you sign in to your computer, use the system's built-in startup settings.

Recommendation: use the latest 5UF VPN app together with the operating system's auto-start feature. This is more stable than older client-based solutions.

Windows:

• Add the 5UF app to your startup items.
• For more reliable startup behavior, run it with administrator permission if needed.

macOS:

• Add the 5UF app to Login Items in System Settings.
• This allows the app to start automatically after you sign in.

If you also want it to connect automatically after launch, make sure the related in-app option is enabled.

Windows Setup Instructions for 5UF VPN Auto-Launch

Follow the steps below to configure 5UF VPN to start automatically when you log into your Windows account:

Step 1: Open the Run Dialog

Press the Windows + R keys simultaneously to open the Run dialog box.

Step 2: Access the Startup Folder

Type the following command into the Run box and press Enter:

	
	

		shell:startup 
	

This will open the Startup folder where programs that launch at login are stored.

Step 3: Add 5UF VPN to Startup

Locate the 5UF VPN application executable or its shortcut on your computer.
Drag and drop the 5UF VPN shortcut into the Startup folder window. This action ensures the app will automatically launch every time you sign in.

---

Additional Tips:

• If you do not have a shortcut, right-click the 5UF VPN.exe file and select Create shortcut before moving it to the Startup folder.

• To remove the app from startup, simply delete the shortcut from this folder.

  

Mac Setup Instructions

Method 1: Using the Dock

1. Launch 5UF VPN.

2. In the Dock, right-click (or Control-click) the 5UF VPN icon.

3. Hover over Options and select Open at Login.

---

Method 2: Using System Settings

1. Open System Settings → General → Login Items & Extensions.

2. Click the + icon.

   

3. Select Applications.

4. Locate and select 5UF VPN.app.

5. Click Open to add it to your startup applications.

   

                                                                                                                                                                                                                                                                                          

Step 1: Identify Your Linux Distribution and System Architecture

1. Determine Your Linux Distribution
   Open the terminal and execute:

	


	
	

		cat /etc/os-release
	

This displays information about your Linux distribution.

1. Check Your System Architecture
   Run:

	


	
	

		uname -m
	

• Output x86_64: your system uses a 64-bit Intel/AMD processor — download linux-amd64 packages.

• Output aarch64: your system uses a 64-bit ARM processor — download linux-arm64 packages.

  
  

  

---

Step 2: Access the Download Page

Visit https://www.5ufclub.com/news/vpn/id/11168/

---

Step 3: Select and Download the Appropriate Linux Package

On the website, choose Linux as your platform. Review the available package formats — .deb, .rpm, .appimage — and select the one compatible with your Linux distribution and preference. Then, download the package matching your system architecture (amd64 or arm64).

Step 1: Verify Your Processor Architecture

For Windows Users

1. Open System Information
   Press Windows + R, type msinfo32, and hit Enter.

   

2. Check System Type

• If System Type shows “x64-based PC”, your processor supports AMD64 (x86-64) and is compatible with the standard Windows AMD64 version.

• If System Type shows “ARM-based PC”, your device runs on an ARM processor and supports Windows ARM64.

  
  

  
  

---

Step 2: Access the Download Page

Visit: https://www.5ufclub.com/news/vpn/id/11168/

---

Step 3: Select Your Platform

On the website, select Windows from the list of platforms.

---

Step 4: Download the Correct Version

• For x64-based PCs, download the AMD64 version.

• For ARM-based PCs, download the ARM64 version.

  

Steps to Download the Correct Version for macOS

1. Determine Your Mac’s Processor Type

   • Click the Apple menu () in the top-left corner of your screen and select About This Mac.

   • Under Chip or Processor, identify whether your Mac uses Apple Silicon (e.g., M1, M2, M3) or Intel.

     

2. Access the Download Page

   • Visit: https://www.5ufclub.com/news/vpn/id/11168/

3. Select macOS as Your Platform

   • On the website, choose Mac from the list of available platforms.

     

4. Download the Appropriate Version

   • For Apple Silicon (M1, M2, M3) — select the ARM64 version.

   • For Intel-based Macs — select the Intel x86_64 version.

     

“Unlimited data” means we do not ban or charge extra for high usage, but we enforce a Fair Usage Policy (daily cap) to ensure fair performance for everyone. Why?

• Without limits, a few users may abuse the service (e.g. servers, heavy sharing), slowing others down.
• VPN servers cost bandwidth, which must be shared efficiently.
• Most “truly unlimited” VPNs silently limit users. We state it clearly.

Example: Our unlimited plan may cap at 20–30GB/day. Beyond that, your speed may drop or pause until the next day. If you accidentally exceed the limit, you can contact our support to restore access. As long as it is not shared by multiple users or maliciously resold, we can restore it immediately.

If you are only visiting China for a short time and do not rely heavily on international services, roaming with your international SIM card is possible. Most major providers (AT&T, Vodafone, T-Mobile, etc.) offer roaming in China, and these connections often bypass the Great Firewall (GFW), allowing direct access to global services. However, note:

• Roaming is very expensive — often $10–15/day
• Speed is usually limited and may have daily caps
• Not suitable for long-term or high-volume use

If you plan to stay in China longer, or rely on access to services like Gmail, YouTube, Instagram, Google Docs, WhatsApp, we strongly recommend:

• Buying a local SIM card (e.g. China Unicom, China Telecom)
• Using a secure VPN to bypass the GFW

Popular services blocked in China without VPN include:

• Search: Google, Bing (EN), DuckDuckGo
• Social: Facebook, Instagram, Twitter, Threads, Snapchat, X
• Messaging: WhatsApp, Telegram, Signal, Messenger, Line
• Streaming: YouTube, Twitch, Spotify, Netflix (partially)
• Cloud: Google Drive, Dropbox, OneDrive, iCloud (partly)
• Email: Gmail, ProtonMail, Outlook (unstable)
• News: BBC, CNN, NYT, Wikipedia (EN)

SNI spoofing replaces the actual domain with a “safe-looking” one (like bing.com) during TLS handshake to bypass domain-based restrictions. Useful when VPN access is blocked.

Does SNI spoofing work in all network environments?  

Not always. Some advanced networks inspect TLS fingerprints or certificate data. SNI spoofing improves success rates but is not guaranteed.

Can SNI spoofing help save mobile data?  

Some mobile carriers offer zero-rated data for specific domains (e.g., music or video apps). SNI spoofing may help you benefit from these packages.

Can I choose a custom spoofed domain?  

YES.

Will SNI spoofing affect the VPN server I’m connecting to?  

No. This only affects the domain name in the handshake phase. Your real traffic still goes to the selected VPN server.

🛡️ SNI Spoofing (Domain Disguise) – Feature Overview

Where to find it:

Settings → Account Security → Domain Spoofing

Supported Versions:

• iOS 8.0 and above

• Android 3.0 and above

🔍 What is SNI?

SNI (Server Name Indication) is part of the TLS/SSL protocol. When your device connects to a website using HTTPS, it sends the domain name in plaintext at the very beginning of the handshake.

This means that firewalls, network providers, or censorship systems can see which website you’re trying to visit, even if your connection is encrypted.

🧪 How SNI Spoofing Works

With SNI spoofing enabled, 5UF VPN replaces the real domain name (e.g., realvpn.example.com) with a harmless and widely accepted domain (e.g., bing.com, baidu.com) during the TLS handshake.

The goal is to deceive censorship or firewall systems that block access based on SNI data, allowing the connection to go through.

✅ This spoofing only affects the initial handshake. Your real VPN session and traffic are not affected or rerouted.

---

🌍 Typical Use Cases

Situation	Recommended	Description
VPN access blocked in China	✅ Yes	Helps bypass domain-based GFW restrictions
Public Wi-Fi in schools, offices, hotels	✅ Yes	Circumvents SNI-based restrictions
Captive portals in airports or malls	✅ Yes	Tricks login systems into allowing access
Mobile data plans with limited domains (e.g., music/video streaming)	✅ Yes	Mimics “zero-rated” domains to save bandwidth or avoid throttling
Normal, unrestricted networks	❌ Not needed	Adds connection time without benefit

---

⚠️ Important Notes

• Recommended spoof domains include popular sites like baidu.com, bing.com, and apple.com

• Not all protocols support SNI spoofing. For example, QUIC/HTTP/3 may not be compatible. Consider switching to TCP mode in Advanced Settings.

• Some VPN servers may reject connections if the SNI domain does not match their TLS certificate. If connection fails, try turning the feature off and reconnect.

---

❓ Frequently Asked Questions (FAQ)

Q1: What is SNI spoofing and why do I need it?

SNI spoofing helps you bypass firewalls by replacing the domain name in your TLS handshake with a commonly allowed domain. This is useful when VPN connections are blocked by domain name.

Q2: Does this change the VPN server I’m connecting to?

No. The real connection still goes to the VPN server you selected. Only the domain used in the TLS handshake is disguised.

Q3: Can I choose a custom spoofed domain?

Yes. The system predefines some common domain names, such as the domain name used to detect available Wi-Fi links in IOS.

Q4: It doesn’t work on my school or office network. What should I try?

Try enabling TCP mode instead of UDP in Advanced Settings. Some networks block or inspect UDP packets more aggressively.

Q5: Can this help me use zero-rated data plans from my carrier (e.g., music streaming)?

Yes, in some cases. If your ISP allows free access to specific services by domain name, SNI spoofing can trick the system into treating your connection as part of that service.

Q6: Does SNI spoofing work in all cases?

No. Some networks perform deeper inspection or block based on other handshake details. SNI spoofing improves success rate but is not guaranteed in every environment.

---

If nothing happens after you tap Connect, the system VPN permission may not have been created correctly, or the old local configuration may be damaged.

Try the following steps:

1. Completely close the 5UF app.
2. Open system settings and remove any old VPN profile or configuration.
3. Open the 5UF app again, tap Connect, and allow the system to create the VPN.
4. If you previously denied the permission, restart the device and try again.
5. If it still does not work, update to the latest version of the app. Reinstall if necessary.

We recommend using the latest app instead of older clients. The latest version has better permission guidance and compatibility.

1.下载

从 Google Play 下载应用。

https://play.google.com/store/apps/details?id=com.v2ray.ang&hl=zh&pli=1

如果不能使用 Google Play，请手工下载：

https://github.com/2dust/v2rayNG/releases

备用下载地址：

“v2rayNG_1.9.43_arm64-v8a.apk”

 Backup download 2

2.从网站复制订阅配置文件，导入到 APP 中，如下图：

https://www.5ufclub.com/xray_config

要选择 N2rayNG 专用的配置地址。

3.开始使用。

点击类似于“播放”这个按钮开始加速。如下图。

高级用法：

点击路由设置，更多（...）导入预定义规则集。

选择“绕过大陆”，可以配置中国大陆的通用规则，只加速国外的 IP，如下图。

1.    下载客户端并安装

Clash for Windows 

https://dl.clashforwindows.org/releases/latest/Clash.for.Windows.Setup.0.20.39.exe

更多其它端也可以在这里找：

https://dl.clashforwindows.org/releases/latest/

备用下载点：

Clash.for.Windows.Setup.0.20.39.exe

2.    点击导入

从我们的网站上获取订阅地址

https://www.5ufclub.com/xray_config

 

3.    使用

选择刚下载好的规则（如上图），选择好服务器（如下图），打开系统代理（下下图），开始使用。

打开系统代理，如下图：

注意事项，如果你的浏览器同时使用无忧府超级 VPN for Chrome 插件时，这里的代理会失效，同理，其它代理类的软件都不能同时生效，你要先禁用插件，或者换一个浏览器。

打开网址：https://ip111.cn

1.    下载客户端

ClashX for MacOS

https://dl.clashx.org/releases/latest/ClashX.dmg

如果上面的地址无法下载，请使用这个地址：

备用下载地址1

2.    点击导入

从我们的网站上获取订阅地址

/xray_config

改入到软件的配置中，如下图：

3.    使用

开始使用

打开“设置为系统代理”

提醒：如果和超级 VPN 同时使用可能会有冲突，需要禁用掉chrome 的相关插件，是禁用整个插件，如果有其它代理类的插件也是一样会干扰使用。