oleacc.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: OLEACC.DLL is an essential Microsoft ActiveX control for accessibility features 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	7 kb.	7156 bytes.

Hashes:

MD5: 23226dbf374ce4dc36e55c7f37c633d7
SHA-1: 23568a3e2233f4fed390fafdb6de7f045cc75437
SHA-256: c61ba2eec2f2ee8628e28fe020dfc35185eaf8e2877f110ca096418b2a344c70
SHA-512: 13c1335186efd1936a7baf8e9730172f1e56a4662a666948466b43b71b3f7f1040b4e3984561512e2be11c899f6ab5adcd1b76acce19892ef0b5e37da88fb2da

How to Fix Oleacc.dll Errors Without Downloading

Oleacc.dll is a legitimate Microsoft system file. Downloading it from third-party sites is dangerous. These steps fix the file safely using Windows.

Run SFC Scan

Open the Windows Start menu.
Type cmd into the search bar.
Right-click Command Prompt.
Select Run as administrator.
Type sfc /scannow.
Press the Enter key.
Wait for the scan to finish.
Restart your computer.

Run DISM Tool

Open Command Prompt as administrator again.
Type DISM /Online /Cleanup-Image /RestoreHealth.
Press the Enter key.
This restores corrupted system files from Microsoft.
Restart your computer after completion.

Re-register the DLL

Open Command Prompt as administrator.
Type regsvr32 oleacc.dll.
Press the Enter key.
Click OK on the popup.

Undo Recent Changes

Open the Control Panel.
Click System and Security.
Open System Restore.
Choose a date before the error.
Follow the prompts to restore.

📊 Diagnostics Tool: Verify Your `oleacc.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:
️ oleacc.dll 7.2.19041.3636 32-bit (x86) | ️ oleacc.dll 7.2.19041.3636 64-bit (x64)
Similar files:
️oleacchooks.dll | ️oleaccrc.dll | ️oleaccrc.dll.mui