uacccom.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: Troubleshoot UACCCom.DLL errors and ensure smooth system operation with our specialized toolkit. 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
Creation date	08.10.2025 22:43:44
File version	4.1.9816.500
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	✅ MD5: Verified	File Hash protection is missing.
File size	257.5 kb.	263680 bytes.

Hashes:

MD5: 3da549c334e8279fa62a1ec8b145db5d ✅
SHA-1: b0d43f1fcf0ea591b3e556c689c6c2ddb33f1b8a
SHA-256: f735cbfa19e2bc4adbd25a0b46b5dbf1066c636b23f223178bd8edb423453273
SHA-512: fb0b78ff65710ef9c98b20a1709f57e021d8fc8b72069b2bf6ebb6c98aa2da92b6c3142e32aa31aff18bbfe53bcff982d383ab71265c686d6c2feba4e0909c1d

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

To fix a uacccom.dll or u2lcom.dll error without downloading risky standalone DLL files from third-party websites, you should use Windows built-in recovery utilities or re-register the component directly.

This specific component is tied to Crystal Reports User Function Library (UFL) / COM Managers or system-level User Account Control interfaces.

Method 1: Run Windows System File Checker (SFC)

This built-in tool automatically checks your operating system files for corruption and restores missing components using your local Windows cache storage.

Press the Windows Key.
Type cmd.
Right-click Command Prompt and select Run as administrator.
Paste the following command and press Enter:
```
sfc /scannow
```
Wait for the verification to reach 100%. If repairs are made, restart your PC.

Method 2: Use Deployment Image Servicing and Management (DISM)

If the local file cache is also corrupted, DISM fixes the background file database directly from official Microsoft recovery resources without demanding manual file packages.

Open Command Prompt as Administrator again.
Run this command to check health:
```
dism /online /cleanup-image /scanhealth
```
Run this command to repair the image system:
```
dism /online /cleanup-image /restorehealth
```
Restart your computer.

Method 3: Re-register the DLL Module Manually

If the file is present on your storage drives but the application cannot communicate with it, you can forcefully register the COM module into the Windows Registry environment.

Launch Command Prompt as Administrator.
Run the command to register the file:
```
regsvr32 uacccom.dll
```
(Note: If the terminal returns a path error, use regsvr32 u2lcom.dll depending on your specific program version).

Method 4: Update or Repair Crystal Reports / .NET Framework

If this error triggers when launching a specific enterprise app or accounting software, the host framework is missing a component.

Press Windows Key + R, type appwiz.cpl, and hit Enter.
Search the list for SAP Crystal Reports or Microsoft .NET Framework.
Click on the software, select Change or Repair, and follow the wizard instructions.

If you are still receiving the error, please let me know what specific program you are trying to launch when the error appears, and what text the error window displays so I can provide customized repair instructions.

📊 Diagnostics Tool: Verify Your `uacccom.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.

Connected files:
cppu3.dll
├── vcl.dll
├── sal3.dll
├── KERNEL32.dll
├── USER32.dll
├── ADVAPI32.dll
├── ole32.dll
├── OLEAUT32.dll
├── OLEACC.dll
├── MSVCR90.dll
└── MSVCP90.dll