Q1. Why am I facing DNS issues in the Proctortrack QT app?
If you’re in China, Google services — including Google DNS (8.8.8.8 / 8.8.4.4) — are blocked. Because of this, the app may fail to connect properly and show a DNS-related error.
Q2. What DNS should I use instead of Google DNS?
Use DNS servers that are accessible within China. Try one of the following:
| Provider | Primary DNS | Secondary DNS |
|---|---|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 |
| OpenDNS | 208.67.222.222 | 208.67.220.220 |
| China Telecom | 202.96.134.133 | — |
| Alibaba Public DNS | 223.5.5.5 | 223.6.6.6 |
✅ Tip: Cloudflare or Alibaba DNS usually work best in mainland China.
Q3. How do I flush my DNS cache after changing DNS?
On Windows:
Open Command Prompt as Administrator.
Run this command:
On Mac:
Open Terminal.
Run this command:
Q4. What if I still face issues after changing DNS?
Ensure your internet connection is stable.
Avoid using restricted school or office networks that might block Proctortrack.
Try connecting via home Wi-Fi or a mobile hotspot.
Q5. Can I use a VPN to fix the issue?
Some students in China use a VPN to bypass DNS restrictions.
⚠️ Only use a VPN if your exam policy explicitly allows it. Always check with your institution first.
Q6. What should I do after updating my DNS?
Flush your DNS cache (see above).
Restart the Proctortrack QT app.
Try launching your exam again.
⚠️ Important Note
Even after changing DNS, some IPs may still be blocked by local ISPs.
If issues persist, Alibaba DNS (223.5.5.5 / 223.6.6.6) is usually the most reliable option within mainland China.
Q7.How do I add manual proxy settings on my system?
A: Follow the steps below to configure a manual proxy on macOS:
Click the Apple menu → System Settings
Select Network
Choose your network connection (Wi-Fi or Ethernet)
Click Details…
Go to the Proxies tab
Enable:
Auto Proxy Discovery
In the Bypassing proxy settings field, enter:
8. Click OK, then Apply.
A: Follow the steps below to configure a manual proxy on Windows:
Press Windows Key + I to open Settings
Select Network & Internet
Click Proxy
Under Manual proxy setup, turn Use a proxy server ON
In the Address field, enter and Click Save:
