How to Fix tcpip.sys BSOD on Windows: DRIVER_IRQL_NOT_LESS_OR_EQUAL and More

TL;DR:

A `tcpip.sys` BSOD, frequently displaying the DRIVER_IRQL_NOT_LESS_OR_EQUAL stop code, usually indicates a kernel-level networking conflict caused by outdated network adapter drivers, VPN clients, or third-party antivirus filters rather than a damaged system file.
    ● If Windows still boots, isolate the software conflict by updating or reinstalling your Wi-Fi or Ethernet drivers, temporarily uninstalling VPN applications, and resetting network components via Command Prompt using `netsh winsock reset` and `netsh int ip reset`.
    ● If the system cannot start, interrupt the startup process three times to enter the Windows Recovery Environment (WinRE) to boot into Safe Mode, uninstall the latest Windows quality update, or revert to a previous System Restore point.
    ● Before resetting or reinstalling Windows as a last resort, use a bootable USB created with Recoverit Windows Data Recovery to extract files from the drive, keeping in mind that this software only retrieves data and cannot repair the `tcpip.sys` crash or faulty drivers.

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A tcpip.sys BSOD usually points to a kernel-level networking conflict, not necessarily a damaged tcpip.sys file. The crash can appear as tcpip.sys failed, tcpip.sys blue screen, or DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys. Common triggers include network adapter drivers, VPN clients, virtual adapters, third-party antivirus filters, Windows system file damage, memory instability, or a recent update.

This guide explains what tcpip.sys does, how to diagnose the real cause, how to fix the crash when Windows still boots, what to do from Windows Recovery Environment when it will not boot, and how to recover files with Recoverit Windows Data Recovery before resetting or reinstalling Windows. Recoverit can help recover files from readable storage; it does not repair tcpip.sys, drivers, or Windows crashes.

Part 1. What Is tcpip.sys?

The tcpip.sys driver is part of the Windows networking stack. It handles TCP/IP communication at the kernel level, so a driver conflict around networking can crash Windows instead of only breaking Wi-Fi, Ethernet, or a VPN app.

What tcpip.sys Does in Windows

tcpip.sys manages core IPv4 and IPv6 network communication in Windows. Network adapters, VPN clients, virtual adapters, firewalls, and security filters all interact with this stack, which is why crashes often happen during browsing, gaming, downloads, VPN use, or heavy network traffic.

Why tcpip.sys Appears on a Blue Screen

tcpip.sys runs in kernel mode, where serious driver errors can bring down the whole system. When Windows detects unsafe memory access or driver behavior, it stops the system and displays a blue screen to prevent further damage.

Does tcpip.sys Mean the Windows File Itself Is Damaged?

Usually, no. tcpip.sys may appear as the crashed module because it was involved in network traffic when another driver behaved incorrectly. VPN software, virtual network adapters, antivirus network filters, outdated network adapter drivers, or faulty hardware can be the real cause.

Common Stop Codes That May Appear With tcpip.sys

Microsoft's Bug Check 0xD1: DRIVER_IRQL_NOT_LESS_OR_EQUAL documentation explains that this stop code indicates a kernel-mode driver tried to access pageable or invalid memory at too high an interrupt request level. For ordinary users, the practical takeaway is simple: focus on drivers, recent software, and hardware changes before replacing tcpip.sys manually.

Part 2. What Causes the tcpip.sys Blue Screen?

A tcpip.sys BSOD is usually triggered by a driver or network filter that interacts with Windows networking. The most common causes are below.

• Faulty or outdated network adapter driver: an old, incompatible, or corrupted Wi-Fi or Ethernet driver can mishandle network operations.
• VPN or virtual network adapter conflict: VPN clients and virtualization tools install adapters that may conflict with tcpip.sys.
• Third-party antivirus or firewall network filter: security software may install low-level filters that inspect network traffic and trigger crashes.
• Problematic Windows update: a recent update can expose compatibility issues with network drivers or security software.
• Corrupted Windows system files: damaged Windows components can make the networking stack unstable.
• Faulty RAM or hardware instability: bad memory, overclocking, or failing network hardware can corrupt data while drivers run.

Part 3. What to Check Before Fixing the tcpip.sys Error

Before you change drivers, uninstall security software, or reset Windows, collect basic crash context. It helps you choose the right fix and protects important files before high-risk repairs.

Part 4. Fix tcpip.sys BSOD When Windows Can Boot

If Windows still starts, begin with low-risk fixes. Work from recent hardware and driver changes toward network resets and clean boot testing.

Fix 1. Restart Windows and Disconnect Recently Added Hardware

Temporary driver states or newly added devices can trigger a tcpip.sys blue screen. Restart first, then remove recently connected USB adapters, network dongles, docking stations, or expansion cards.

Instructions. Open Start > Power > Restart. Disconnect recently added hardware and test whether Windows starts normally.

Fix 2. Update the Network Adapter Driver

An outdated Wi-Fi, Ethernet, or virtual adapter driver is one of the most likely causes of tcpip.sys crashes.

Step 1. Open Device Manager > expand Network adapters > right-click your adapter > choose Update driver.

Step 2. Select Search automatically for drivers. Restart the system after Windows finishes checking.

Fix 3. Roll Back the Network Adapter Driver

Use rollback when the tcpip.sys failed error started immediately after updating a network driver.

Instructions. Open the adapter's Properties > choose the Driver tab > click Roll Back Driver if available > restart Windows.

Fix 4. Reinstall the Network Adapter Driver

If updating does not help, the installed driver package may be corrupted. Reinstalling lets Windows load a fresh copy.

Instructions. In Device Manager, right-click the network adapter > choose Uninstall device > restart Windows. If the crash continues, install the latest adapter driver from your PC or adapter manufacturer's official support page.

Fix 5. Update or Remove VPN and Virtual Network Software

VPN clients, packet filters, and virtual adapters can sit directly in the network path. If crashes happen when connecting to a VPN, update it first. If the issue continues, remove it temporarily.

Instructions. Update the VPN from its official app or website. If the BSOD continues, open Settings > Network & Internet > VPN, remove the VPN connection, and uninstall the VPN app if needed.

Fix 6. Temporarily Uninstall Third-Party Antivirus or Firewall Software

Security tools can install network filter drivers. If tcpip.sys crashes started after installing or updating security software, uninstall it temporarily and test with Microsoft Defender enabled.

Instructions. Open Settings > Apps > locate the third-party antivirus or firewall > choose Uninstall > restart Windows and monitor for crashes.

Fix 7. Reset Winsock and TCP/IP Settings

Resetting network components can help when the crash is tied to corrupted network configuration, proxy tools, VPN leftovers, or filter settings. This does not erase personal files.

Step 1. Run Command Prompt as administrator, type netsh winsock reset, and press Enter.

Step 2. Type netsh int ip reset, press Enter, then restart the PC.

Fix 8. Perform a Clean Boot

A clean boot helps isolate third-party startup services, including VPN, security, monitoring, and network utilities.

Step 1. Open System Configuration > Services > check Hide all Microsoft services > click Disable all.

Step 2. Open the Startup tab > select Open Task Manager > disable startup items > restart and test whether the crash returns.

Part 5. Repair Windows System Problems Related to tcpip.sys

If network driver fixes do not stop the tcpip.sys BSOD, repair Windows components before moving to reset or reinstall options.

Run DISM and SFC

Microsoft recommends using DISM and System File Checker for missing or corrupted system files. Run DISM first, then SFC.

For DISM. Run Command Prompt as administrator, type DISM /Online /Cleanup-Image /RestoreHealth, and press Enter.

For SFC scan. After DISM finishes, type sfc /scannow, press Enter, and restart the PC when the scan completes.

Install Pending Windows and Driver Updates

Pending updates may include compatibility fixes for Windows networking, security filters, or device drivers.

Step 1. Open Settings > Windows Update > Check for updates, then install available updates.

Step 2. Open Advanced options > Optional updates and install relevant driver updates if available.

Uninstall a Recent Windows Update

If crashes began right after a specific update, uninstalling that update can confirm whether it caused a compatibility problem.

Instructions. In Windows Update, open Update history > Uninstall updates > select the update installed around the time crashes began > click Uninstall.

Use System Restore

Microsoft explains that System Restore can undo recent system changes without affecting personal files. Use it if a restore point exists before the tcpip.sys crash started.

Instructions. Search for Create a restore point > open System Restore > choose a restore point before the issue began > follow the prompts.

Part 6. What to Do if Windows Will Not Boot

A repeated tcpip.sys blue screen can stop Windows from starting. Work from Windows Recovery Environment and protect your files before reset or reinstall steps.

Enter Windows Recovery Environment

Microsoft's Windows Recovery Environment provides recovery tools when Windows cannot start normally. Windows may enter it automatically after repeated failed boots.

Instructions. Restart the computer and interrupt startup three times during the Windows logo if needed. Then choose Troubleshoot.

Start Windows in Safe Mode

Safe Mode loads only essential drivers. If Safe Mode works, a third-party driver, VPN, security filter, or startup service is likely involved.

Step 1. In WinRE, choose Troubleshoot > Advanced options > Startup Settings > Restart.

Step 2. Press 4 or F4 to select Enable Safe Mode.

Run Startup Repair

Startup Repair can fix some boot problems, though it will not directly repair a bad third-party network driver in every case.

Instructions. From Troubleshoot > Advanced options, choose Startup Repair. Let the process finish, then restart.

Uninstall the Latest Windows Update

Use this if the system became unbootable right after a Windows update.

Instructions. In WinRE, choose Advanced options > Uninstall Updates > Uninstall latest quality update.

Use System Restore from WinRE

System Restore also works from the recovery environment if Windows cannot boot normally.

Instructions. From WinRE, choose Troubleshoot > Advanced options > System Restore, then select a restore point before the BSOD began.

Reset or Reinstall Windows as a Last Resort

Resetting or reinstalling Windows can remove broken drivers and system changes, but it can also remove apps, settings, and data depending on the option selected. Recover important files first if Windows is unstable or unbootable.

Step 1. In WinRE, choose Troubleshoot > Reset this PC.

Step 2. Choose Keep my files if you want Windows to try reinstalling without removing personal files. Still back up first, because resets can fail or remove apps and settings.

Part 7. Check for Memory or Hardware Problems

If driver and Windows repairs do not stop the tcpip.sys blue screen, test hardware. Memory instability and failing network adapters can cause driver crashes that look like software errors.

Run Windows Memory Diagnostic

Faulty RAM can corrupt data while drivers run, including tcpip.sys. Search for Windows Memory Diagnostic, choose Restart now and check for problems, and review results after restart.

Check for Network Adapter Hardware Failure

Test a different network adapter, such as a USB Wi-Fi or Ethernet dongle. If crashes stop with different hardware, the original adapter or motherboard network controller may be failing.

Remove Recently Installed Hardware

Remove recently added network cards, dongles, docking stations, or expansion hardware. Then test whether the crash stops with that hardware disconnected.

Disable Unstable Overclocking

Unstable CPU or RAM overclocking can cause random driver crashes. Restore default CPU and memory settings in BIOS or UEFI, then test Windows again.

Instructions. In BIOS, use the manufacturer's default settings option, often F5, then save and exit, often F10.

Run Manufacturer Hardware Diagnostics

Many PC manufacturers provide diagnostics through a support app, BIOS tool, or boot menu. Run a full scan and investigate any memory, network, motherboard, or storage failures.

Part 8. Recover Files Before Resetting or Reinstalling Windows

If tcpip.sys failed repeatedly and Windows no longer boots, system repairs may become unavoidable. Without a recent backup, files can be trapped on the affected drive. Recover files before reset, reinstall, clean install, or drive replacement.

When Recoverit Can Help

Recoverit Windows Data Recovery can help recover files from a readable internal drive, external drive, or unbootable Windows computer by using bootable recovery media. It recovers files only; it does not repair tcpip.sys, fix drivers, stop blue screens, or repair Windows.

• Windows cannot boot: create bootable recovery media on another working computer.
• Reset or reinstall is planned: recover files before changing the Windows installation.
• Drive is still detected: scan the readable storage device and save files to another disk.
• Physical drive failure is suspected: stop DIY attempts if the drive clicks, overheats, disappears, or fails detection.

Guide to Recover Files Before Resetting or Reinstalling Windows

Use a working computer and a blank USB drive with enough capacity to create bootable media. Do not save recovered files back to the affected system drive.

Step 1. Open the bootable recovery tool. Install Recoverit on a working computer, launch it, and select Other Tools > Computer Not Bootable > Start.

Step 2. Prepare the bootable USB drive. Connect a USB drive, choose it from the list, and select Start. This process may erase the USB drive.

Step 3. Recover files before reinstalling Windows. Boot the affected PC from the Recoverit USB, select Data Recovery, scan the drive, and save required files to external storage.

Part 9. How to Prevent tcpip.sys Blue Screen Errors

After resolving the current crash, use these habits to reduce future tcpip.sys blue screen errors.

• Keep network drivers updated: use Windows Update or your PC/network adapter manufacturer's official support page.
• Avoid untrusted driver update tools: unofficial driver installers can add incompatible network drivers.
• Keep VPN and security software updated: outdated network filters are common BSOD triggers.
• Remove unused virtual adapters: uninstall VPN or virtualization tools you no longer use.
• Create restore points before driver changes: this gives you a rollback path if crashes begin after an update.
• Check RAM and hardware health: run diagnostics if crashes become random or affect multiple drivers.
• Back up important files regularly: a current backup makes reset, reinstall, or hardware repair less risky.

Conclusion

A tcpip.sys BSOD is most often caused by network driver conflicts, VPN software, antivirus or firewall filters, Windows system file problems, updates, or hardware instability. Start with recent changes, network adapter drivers, VPN/security software, and network resets. If Windows will not boot, use WinRE, Safe Mode, Startup Repair, update rollback, or System Restore. Before resetting or reinstalling Windows, recover important files from the affected drive and remember that Recoverit is for file recovery, not blue screen repair.