winhttp.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Discover the functions and importance of winhttp.dll in Windows applications. Essential for HTTP networking capabilities. 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	146.5 kb.	149978 bytes.

Hashes:

MD5: 70226ffc6ef92a080b23598e17c1f754
SHA-1: 70cf64657b0737a6c1a832f77298a96c6ee277f7
SHA-256: 20d7236cb1f8f3b16094cf2f36fc0da00e42ff753f3d2cb8d4061ee98c93fe1a
SHA-512: 9408d4bf9e369568cd0aaf5c5f2022c84f67ed545483fe140f230e36fdb1a7840b6e47fe80922da71938b7a681452fcd507914968a90b1a5b2298ebdde5e75f9

How to Fix Winhttp.dll Errors Without Downloading

You can fix winhttp.dll errors using built-in Windows tools. Do not download DLL files from third-party websites, as they often contain malware.

1. Run SFC and DISM Scan

Windows can automatically find and replace missing or corrupted system files.

Open the Start Menu.
Type cmd.
Right-click Command Prompt and select Run as administrator.
Type sfc /scannow and press Enter.
Wait for the scan to finish.
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your computer.

2. Register the DLL File

If the file exists but Windows cannot see it, you must re-register it.

Open Command Prompt as an administrator.
Type regsvr32 winhttp.dll and press Enter.
Click OK on the confirmation popup.

3. Update Windows

Outdated system components can cause DLL conflicts.

Press Windows Key + I to open Settings.
Click Update & Security (or Windows Update).
Click Check for updates.
Install all available updates and restart your PC.

4. Reinstall the Affected Program

If the error only happens when opening a specific app, that app's installation is corrupted.

Press Windows Key + R, type appwiz.cpl, and press Enter.
Find the problematic program in the list.
Right-click it and select Uninstall.
Download and reinstall the program from its official source.

5. Use System Restore

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

Open the Start Menu, type Create a restore point, and click it.
Click the System Restore button.
Choose a date before the error started.
Follow the on-screen prompts and restart.

📊 Diagnostics Tool: Verify Your `winhttp.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:
️ winhttp.dll 10.0.19041.5794 64-bit (x64) | ️ winhttp.dll 10.0.19041.899 32-bit (x86)
Similar files:
️winhttpcom.dll | ️winhttp.dll.mui