Step 1 – Download the correct archive
Get the file named clumsy-0.4-v2-win64.zip (or 32‑bit if needed).
Step 2 – Verify the file (optional but recommended)
Compare the SHA256 hash against the one posted in the original release notes.
For clumsy.exe version 0.4 v2, expected hash (example – check official sources):
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Step 3 – Extract
Right‑click the ZIP → Extract All → choose a folder like C:\Tools\clumsy clumsy 04 v2 install download
Step 4 – Run as Administrator
Step 5 – Install the network driver (first launch only)
When clumsy opens, click Install Driver (if prompted). Approve the Windows security dialog.
Note: On Windows 10/11, you may need to disable memory integrity (Core Isolation) temporarily for legacy drivers. Step 1 – Download the correct archive Get
Clumsy is an older tool. The most stable and widely recognized final version is v0.2. Because the original official website is sometimes down or hard to find, users often look for it on third-party sites.
| Problem | Solution |
|---------|----------|
| “Failed to start filtering” | Run clumsy as Administrator. Reboot if WinDivert is locked by another process. |
| No effect on traffic | Check interface selection; use ipconfig to confirm correct adapter. |
| System becomes slow | Reduce throttle/packet drop values; stop clumsy immediately. |
| Antivirus deletes .exe | Restore from quarantine and add folder exclusion. |
| Works for browser but not game | The game may use UDP + custom ports – use filter udp or ip.DstAddr == <game server IP>. | Step 5 – Install the network driver (first
Clumsy requires a packet capture driver to function.
Yes if:
No – use newer alternatives instead: