umoutlookaddin.dll - Analyze and How to Fix Errors

⚠️ Important Notice: dll for Outlook integration enhancements. Improve your productivity with seamless add-in features. 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	28.10.2006 00:34:51
File version	12.0.4518.1014
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	✅ Have signed	File have signature, it is original file.
Hash Integrity	✅ MD5: Verified	File Hash protection is missing.
File size	426.3 kb.	436512 bytes.

Hashes:

MD5: 61ea3587906969e79bcb0454372c7253 ✅
SHA-1: d100b73d0445b1a6f4c4151c1e85794e9bfb57e7
SHA-256: be027d5f2269b96b274dfb7df0f54b2cb04c1058e182fb94b89f0db605b37e18
SHA-512: c4ad796f0d290386da221e47cdf4910fc08b1a29dfaa7981ae4d28333f91f761631ab67e54aadd2d688a79a4821dc7adca6a3e3f9ad9f6fbcb2853f2018cd59e

Digital file signature umoutlookaddin.dll ✅

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

File Description

The umoutlookaddin.dll file is a Dynamic Link Library component developed by Microsoft Corporation. It belongs to the Microsoft Outlook Unified Messaging Add-in system. This file integrates Exchange Server Unified Messaging features (like voicemail and fax management) directly into your Outlook desktop application.

Standard File Location

The exact path depends on your Windows architecture and installed Microsoft Office version. The default locations are:

• 64-bit Office on 64-bit Windows: C:\Program Files\Microsoft Office\root\Office16\
• 32-bit Office on 64-bit Windows: C:\Program Files (x86)\Microsoft Office\root\Office16\
• Note: For older Office versions, replace Office16 with Office15 (Office 2013) or Office14 (Office 2010).

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How to Fix umoutlookaddin.dll Errors Without Downloading

Downloading random DLL files from the internet exposes your computer to malware. Use these official built-in Windows and Office methods to fix corruption or registration issues safely.

1. Disable the Add-in in Safe Mode

If Outlook crashes on startup due to this file, disable it temporarily:

1. Press Windows Key + R to open the Run dialog.
2. Type outlook.exe /safe and hit Enter.
3. Go to File > Options > Add-ins.
4. At the bottom, select COM Add-ins from the "Manage" dropdown and click Go.
5. Uncheck Microsoft Exchange Unified Messaging and click OK.
6. Restart Outlook normally.

2. Run an Office Quick Repair

Windows can automatically replace or fix missing or corrupted Office files:

1. Right-click the Start menu and select Installed apps (or Apps and Features).
2. Scroll down and locate your Microsoft Office or Microsoft 365 installation.
3. Click the three dots (or select it) and click Modify.
4. Choose Quick Repair and click Repair.
5. If the issue persists, repeat the steps but select Online Repair.

3. Run SFC and DISM Scans

If the error stems from an underlying Windows system file conflict, use the command deployment tools:

1. Open the Start menu, type cmd, right-click Command Prompt, and select Run as administrator.
2. Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter. Wait for it to finish.
3. Type sfc /scannow and press Enter.
4. Restart your PC after the verification hits 100%.

4. Re-register the DLL Component

If the file exists but Windows cannot read it, manually re-register it via the registry server:

1. Open Command Prompt as administrator.
2. Type regsvr32 /u umoutlookaddin.dll and press Enter to unregister it.
3. Type regsvr32 umoutlookaddin.dll and press Enter to re-register it.

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📊 Diagnostics Tool: Verify Your umoutlookaddin.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:
MSVCR80.dll
├── KERNEL32.dll
├── USER32.dll
├── GDI32.dll
├── ole32.dll
├── OLEAUT32.dll
├── ADVAPI32.dll
├── WININET.dll
├── MSO.dll
├── MSVCP80.dll
├── UxTheme.dll
├── MAPI32.dll
├── SHELL32.dll
├── credui.dll
├── CRYPT32.dll
├── OLEACC.dll
├── umoutlookaddin.dll
└── Kernel32.dll

Microsoft Corporation