comdlg32.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Meta Description: Explore details about comdlg32.dll, a crucial system file for file dialog operations in Windows applications. 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	35.1 kb.	35945 bytes.

Hashes:

MD5: 81954961c615373cf26a4b3898e55f86
SHA-1: e4e1522feabe0da4954ffbe2ead3d8ed282ed6a8
SHA-256: 47f80c2060e72e4833ea3e7395246d214d55323225776c1d3cc01583268cab2d
SHA-512: e4dd0ce89c05127982555c6873cf7ec0db48815cd4795939b783a73df2b8ed6306ffa5cce201663020a3331b6964c0ba750a87c2ce75e57ab7003caa2138adb7

How to Fix Comdlg32.dll Errors Without Downloading

The comdlg32.dll file is a legitimate Microsoft Windows system file responsible for standard dialog boxes, such as "Open" and "Save As". If it is missing or corrupted, downloading it from third-party websites is dangerous because those files often contain malware.

Here is how to fix the error safely using built-in Windows tools.

1. Run SFC (System File Checker)

This tool scans your system for corrupted or missing Windows files and replaces them automatically.

Press the Windows Key.
Type cmd.
Right-click Command Prompt and select Run as administrator.
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 to fix the file, DISM will fetch a healthy copy of the DLL directly from Microsoft's official servers.

Open Command Prompt as an administrator.
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your PC after the process completes.

3. Register the DLL File

If the file exists but Windows cannot recognize it, you need to re-register it in the system registry.

Open Command Prompt as an administrator.
Type regsvr32 comdlg32.dll and press Enter.
Click OK on the confirmation pop-up.

4. Restore from the Recycle Bin

If you accidentally deleted the file yourself, it might still be salvageable.

Open the Recycle Bin.
Search for comdlg32.dll.
Right-click the file and select Restore.

5. Run a Malware Scan

Sometimes malware disguises itself as system files or blocks them from running. Use Windows Defender to check your system.

Open Windows Settings (Win + I).
Go to Privacy & security > Windows Security.
Click Virus & threat protection.
Choose Scan options, select Full scan, and click Scan now.

📊 Diagnostics Tool: Verify Your `comdlg32.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:
️ comdlg32.dll 10.0.19041.5848 32-bit (x86) | ️ comdlg32.dll 10.0.19041.5848 64-bit (x64)
Similar files:
️comdlg32.ocx | ️comdlg32.dll.mui