Encountering Windows Error Code ERROR_72 can be frustrating, but don’t worry — with a bit of patience and some straightforward steps, you can resolve this issue quickly. In this guide, we’ll walk you through what ERROR_72 is, why it happens, and detailed solutions to get your system back on track.
What is Windows Error Code ERROR_72?
Windows Error Code ERROR_72 is typically associated with network-related issues, especially when Windows cannot establish or maintain a proper connection with a network resource. This error commonly occurs during file sharing, network drive mappings, or accessing shared folders over a LAN (Local Area Network). It signals that the network path or resource is unreachable or there’s a problem with network permissions or configuration.
Why Does ERROR_72 Occur?
Some common causes include:
- Network connectivity problems: dropped connections, unstable Wi-Fi, or disconnected cables.
- Incorrect network credentials or permissions blocking access.
- Firewall or antivirus blocking network traffic.
- Corrupted or outdated network drivers.
- Issues with network configuration or DNS resolution.
- Windows system file corruption or registry errors.
How to Fix Windows Error Code ERROR_72: Step-by-Step
Step 1: Check Network Connectivity
Before diving into deeper troubleshooting:
- Ensure physical connections are secure. If you’re on a wired connection, check that your Ethernet cable is firmly plugged into both your PC and router.
- For wireless connections, confirm your PC is connected to the right Wi-Fi network.
- Try accessing other websites or network devices to verify your connection is working.
-
Use the Command Prompt to ping your router or the network resource:
bash
ping 192.168.1.1Replace
192.168.1.1with your router’s IP or the server address you want to reach. If ping fails, there are network issues you need to address first.
Step 2: Restart Your Devices
Sometimes, a quick reboot of your PC, router, and modem can clear temporary glitches:
- Restart your PC.
- Power-cycle your router and modem: unplug them, wait 30 seconds, then plug back in.
- Check if ERROR_72 persists after rebooting.
Step 3: Verify Network Sharing Settings and Credentials
Windows Error Code ERROR_72 often pops up due to incorrect sharing permissions:
- Open Control Panel > Network and Sharing Center > Advanced sharing settings.
-
Ensure these settings are enabled:
- Turn on network discovery
- Turn on file and printer sharing
- Under All Networks, enable password protected sharing (if you use credentials).
- Map the network drive or connect using correct usernames and passwords. If prompted, make sure you use the right domain or computer name with the username:
COMPUTERNAME\username.
Step 4: Disable Firewall/Antivirus Temporarily
Your security software might be blocking network communications:
-
Temporarily disable Windows Defender Firewall:
- Go to Control Panel > Windows Defender Firewall > Turn Windows Defender Firewall on or off.
- Select Turn off Windows Defender Firewall for private and public networks temporarily.
- If you use third-party antivirus or firewall software, disable it momentarily.
Try reconnecting after disabling and see if ERROR_72 disappears. If so, adjust your firewall/antivirus settings to whitelist your network or app.
Step 5: Update or Reinstall Network Drivers
Outdated or corrupt network drivers can cause connectivity errors:
- Press Win + X and select Device Manager.
- Expand Network adapters.
- Right-click your adapter and select Update driver.
- Choose Search automatically for drivers.
- If no updates are found, you can uninstall the driver via right-click > Uninstall device (ensure to check “Delete the driver software for this device” if available).
- Restart your PC — Windows will reinstall the default drivers.
Step 6: Reset Network Settings
A network reset can clear misconfigurations:
- Open Settings > Network & Internet > Status.
- Scroll down and select Network reset.
- Follow prompts to reset your adapters and restart your computer.
After rebooting, reconfigure your network settings and test the connection.
Step 7: Check for System File Corruption
Corrupted system files can generate miscellaneous errors:
- Open Command Prompt as Administrator by right-clicking Start button.
-
Run the System File Checker tool:
bash
sfc /scannow - Wait until the scan completes and follow any on-screen instructions.
-
You can also run DISM (Deployment Image Servicing and Management) if needed:
bash
DISM /Online /Cleanup-Image /RestoreHealth
Restart your PC and verify if ERROR_72 still occurs.
Step 8: Consult Event Viewer and Logs
If your problem continues, check Event Viewer for detailed error messages:
- Press Win + X > Event Viewer.
- Look under Windows Logs > System and Application at the time of the error.
- Note any warnings or errors related to networking or file sharing to better understand root causes.
Final Tips
- Sometimes, workplace or corporate networks have restrictive policies — contact your system administrator.
- Keep your Windows OS updated to patch known bugs causing network errors.
- Use trusted tools and always back up important files before making major changes.
Conclusion
Windows Error Code ERROR_72 can usually be fixed by addressing your network settings, checking credentials, and updating system components. Following this step-by-step guide will help you restore smooth communication between your PC and network resources. Remember, a calm, systematic approach solves most Windows errors — and you’ve got this!
If this guide helped you, feel free to share it with friends or colleagues facing the same problem, and drop any questions in the comments below. Happy troubleshooting!
