startui.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Optimize your system with startui.dll - essential for Windows startup optimization and performance enhancement. 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	0.5 Mb.	530748 bytes.

Hashes:

MD5: e8a1a6ad37268f7428b3b531f75e7f03
SHA-1: 7bd0cdf28061cff7a33a595a51dc8a246096e184
SHA-256: 6acab02e261d53fe2e050d302ab712428896b3fd65cbbcb50f84ae41af31d078
SHA-512: 9f5b33d2772730752455bf8065d0b28f8cbb48448ab0bea4f28bd23b84d5f5ba12be894f92bc415b4d352f8bdab924b551f58a72dddacfd241cd4842a8fd6aed

What is startui.dll?

The startui.dll file is a legitimate Dynamic Link Library (DLL) component of the Microsoft Windows Operating System. It is primarily associated with the Start Menu User Interface and handles visual elements, layouts, and interactive components of the Windows Start Menu, Action Center, and shell environment.

Standard File Location

The genuine file is always located in the Windows system directories. The standard paths are:

64-bit systems: C:\Windows\System32\startui.dll
32-bit systems (or 32-bit version on 64-bit OS): C:\Windows\SysWOW64\startui.dll

Note: If you find this file located in any other directory (like Temp or AppData), it might be malware disguised as a system file.

How to Fix startui.dll Errors (Without Downloading Anything)

If you are experiencing crashes, missing file errors, or system freezes related to startui.dll, you do not need to download third-party tools. You can repair it using built-in Windows utilities.

Method 1: Run the SFC (System File Checker) Tool

The System File Checker will scan all protected system files and automatically replace corrupted or missing files like startui.dll using a cached copy.

Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
Type the following command and press Enter:
```
sfc /scannow
```
Wait for the scan to reach 100%. Do not close the window.
Restart your computer after the process finishes.

Method 2: Run the DISM Tool

If the SFC tool cannot find the healthy file in its cache, the Deployment Image Servicing and Management (DISM) tool will fix the Windows image system files using official Windows Update servers.

Open Command Prompt as administrator (as shown in Method 1).

Type the following command and press Enter:

DISM /Online /Cleanup-Image /RestoreHealth

Let the process complete (it may take several minutes depending on your internet connection).
Run the sfc /scannow command from Method 1 one more time right after DISM finishes, then restart your PC.

Method 3: Restart Windows Explorer

If the error manifests as a frozen Start Menu or visual glitch, restarting the Windows shell can clear the error from memory.

Press Ctrl + Shift + Esc to open the Task Manager.
Click on More details if you are in the simple view.
Scroll down the Processes tab and find Windows Explorer.
Right-click on it and select Restart.

To help you get the exact solution, could you tell me:

What is the exact error message text you are seeing?
When does the error happen? (e.g., at startup, when clicking the Start Menu, or when launching a specific app?)
Which Windows version are you running?

📊 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.

Other versions:
️ startui.dll 10.0.19041.899 64-bit (x64) | ️ startui.dll 10.0.19041.6456 32-bit (x86)