wlancfg.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Manage wireless network settings with wlancfg.dll configuration utility. 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	2.5 kb.	2563 bytes.

Hashes:

MD5: 21ad607e0fe6a4e5c57a4e29cc904ed8
SHA-1: a34789b4821c8877ef00a283517b0c4c18400f58
SHA-256: b176faecea70e67a5e49421e2c6eaeb612194f09fe80693482f9e111f967c2dc
SHA-512: b4256e749f18b4ee5abdb39eff9055ac603441cac9ba271aa936499f4d4372d655d2bb537dfe062574ce86888250ee4eac5b5b2f161ad39fedb42cec517ae084

What is wlancfg.dll?

Wireless LAN Configuration Engine: It handles Wi-Fi connections, profiles, and wireless network configurations in Windows.
System File: It is a core Dynamic Link Library (DLL) component of the Microsoft Windows Operating System.

Standard File Location

64-bit Systems (Primary): C:\Windows\System32\
32-bit Systems: C:\Windows\System32\
64-bit Systems (32-bit copy): C:\Windows\SysWOW64\

How to Fix wlancfg.dll Errors (Without Downloading)

1. Run SFC (System File Checker)

This tool scans and repairs corrupted or missing Windows system files natively.

Press Windows Key + X and select Terminal (Admin) or Command Prompt (Admin).
Type sfc /scannow and press Enter.
Wait for the scan to finish and restart your computer.

2. Run DISM (Deployment Image Servicing and Management)

If SFC fails, DISM repairs the underlying Windows system image.

Open Command Prompt (Admin).
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your PC after completion.

3. Update or Reinstall Wi-Fi Drivers

Corrupted wireless drivers can trigger wlancfg.dll crashes.

Right-click the Start menu and select Device Manager.
Expand the Network adapters section.
Right-click your wireless card (e.g., Intel, Realtek) and choose Update driver.
Alternatively, select Uninstall device, then restart your PC to let Windows reinstall it automatically.

4. System Restore

Roll back your system to a state before the error started occurring.

Press Windows Key + R, type rstrui, and press Enter.
Select a restore point dated before the error began.
Follow the prompts to finish the restoration.

5. Restart the WLAN AutoConfig Service

Ensures the wireless service is running correctly.

Press Windows Key + R, type services.msc, and press Enter.
Scroll down and locate WLAN AutoConfig.
Right-click it and select Restart (or Start if it is not running).
Right-click it again, select Properties, and set Startup type to Automatic.

If these native steps do not resolve the issue, let me know:

What specific error message or code are you seeing?
When does the error pop up (e.g., at boot, when connecting to Wi-Fi, opening a game)?
Which Windows version are you running?

📊 Diagnostics Tool: Verify Your `wlancfg.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:
️ wlancfg.dll 10.0.19041.3636 32-bit (x86) | ️ wlancfg.dll 10.0.19041.3636 64-bit (x64)
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️wlancfg.dll.mui