startui.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Troubleshoot and download startui.dll file for Windows errors instantly. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	32-bit (x86)	Compatible with 32 and 64-bit Windows
File version	10.0.19041.6456
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	✅ MD5: Verified	In file hash protection exist and it is verified.
File size	6.6 Mb.	6946304 bytes.

Hashes:

MD5: 6819c7076051e3f2825e371cad5d4f6d ✅
SHA-1: 9dea5347a7032594291e19bf0c2e505e5f359926
SHA-256: 9be84db647bad552c5c34967e699313de8cfc92075de49c2c6f0b9cdc1b8b6f6
SHA-512: ce1d71c7b8b64b72c5a7d58d0ea7f20e62df2c7f60805e4305a1778386944065f7d2a8e99c1df56c19a2ff12153278e15856c989c4e003a4317aa717927f26d4

✅ This file is compatible with 32-bit Windows and can run on ✅ 64-bit Windows (via the WOW64 subsystem).

File Description: startui.dll

startui.dll (Start UI Login Framework) is a legitimate Microsoft Dynamic Link Library file. It is an essential component of the Windows operating system, responsible for managing the user interface elements during the system login process, user switching, and the initial loading of the Windows Start screen or desktop environment.

Standard File Location

The authentic file is strictly located in the Windows system directory. If you find it anywhere else, it could be malware masking itself under a legitimate name.

Standard Path: C:\Windows\System32\

How to Fix startui.dll Errors (Without Downloading)

Do not download .dll files from third-party websites. They often contain malware or outdated versions that cause further system instability. Use these built-in Windows deployment tools to repair the file safely.

1. Run the System File Checker (SFC)

This built-in tool scans your system for missing or corrupted system files and automatically replaces them using a cached copy.

Press the Windows Key.
Type cmd.
Right-click Command Prompt.
Select Run as administrator.
Type sfc /scannow and press Enter.
Wait for the scan to hit 100% completion.
Restart your computer.

2. Run the DISM Tool

If the SFC tool cannot find the clean cached file to replace the corrupted startui.dll, the Deployment Image Servicing and Management (DISM) tool will fetch a fresh copy directly from Microsoft servers without requiring a manual download.

Open Command Prompt as administrator (same steps as above).
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Ensure you have an active internet connection.
Allow the process to finish completely.
Run the sfc /scannow command one more time right after.
Restart your computer.

3. Check for Pending Windows Updates

Because startui.dll belongs to the core system UI framework, Microsoft frequently updates it via standard security patches.

Press Windows Key + I to open Settings.
Click on Windows Update (or Update & Security).
Click Check for updates.
Install all pending updates and reboot.

📊 Diagnostics Tool: Verify Your `startui.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.