firewallapi.dll - Analyze and How to Fix Errors

⚠️ Important Notice: FirewallAPI DLL file essential for Windows firewall management functions.Important for network security settings. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	other	️ Not detected
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	ℹ️ Unverified	File Hash protection is missing.
File size	29.1 kb.	29775 bytes.

Hashes:

MD5: 974d005ab0fa3266cacc06af4058448f
SHA-1: 3a86098801a2f5d98998d892309a192ba0ef8e22
SHA-256: b255908504993aef2f565c58edccf009ab265db319e435d6aa9070e50a6447bc
SHA-512: f02bab29dccdd175bdba99b99d18a8fa0ac77969ba57de85a80e36247054094c92b327fc847139e8618078c4c5a09745fa7681121be209bde8708b2f8cbd0c75

To fix a missing or corrupted firewallapi.dll error without downloading files from third-party websites, use the built-in Windows repair tools.

Run SFC and DISM Scans

Windows has built-in tools to find and replace corrupted system files automatically.

1. Press Windows Key + X.
2. Select Terminal (Admin) or Command Prompt (Admin).
3. Type sfc /scannow and press Enter.
4. Wait for the scan to finish completely.
5. Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
6. Restart your computer.

Register the DLL File

If the file exists but Windows cannot read it, re-registering it can fix the issue.

1. Open Command Prompt as Administrator.
2. Type regsvr32 firewallapi.dll and press Enter.
3. Click OK on the confirmation popup.
4. Restart your PC.

Run Windows Update

Updating Windows replaces outdated or broken core system components.

1. Open Settings (Windows Key + I).
2. Go to Windows Update.
3. Click Check for updates.
4. Install all available updates and restart.

Perform a System Restore

If the error started recently, roll back your system to a time when it worked.

1. Type Create a restore point in the Windows search bar and open it.
2. Click the System Restore button.
3. Choose a date before the error started appearing.
4. Follow the prompts and let Windows restore itself.

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📊 Diagnostics Tool: Verify Your firewallapi.dll File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ firewallapi.dll 10.0.19041.4291 32-bit (x86) | ️ firewallapi.dll 10.0.19041.5438 64-bit (x64)
Similar files:
️firewallapi.dll.mui