olmapi32.dll - Analyze and How to Fix Errors

⚠️ Important Notice: Discover information about olmapi32.dll, its function in Windows systems, and how to handle errors related to this DLL file. 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 00:00:49
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	2.8 Mb.	2.8 Mb. bytes.

Hashes:

MD5: f43d94430fd80aee9fb522b9041eb261 ✅
SHA-1: 4c0c1738b4dedb4160c8e3fc65147dfd79e158f2
SHA-256: 5e293a295020126536996ed8340f0be5605d38b3d9e8325069a6c087cf1c9b7d
SHA-512: 79ab7a5e2a1d30025bc9e3d6802d22dee5971f9c7821574191b096c80f230db42331f34978533a709df5ec2f4ca79b3b964cfb90e58517147479ecbe8232d0c6

Digital file signature olmapi32.dll ✅

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

File Description

olmapi32.dll is the Outlook MAPI Client Library. MAPI stands for Messaging Application Programming Interface. It is a Microsoft dynamic link library component. It allows Microsoft Outlook to communicate with mail servers like Microsoft Exchange. It handles core mail functions. This includes processing email stores, address books, and message delivery.

Standard File Location

The exact location depends on your version of Windows and Microsoft Office:

• Office 365 / 2019 / 2016 (64-bit Windows & 64-bit Office): C:\Program Files\Microsoft Office\root\Office16\
• Office 365 / 2019 / 2016 (64-bit Windows & 32-bit Office): C:\Program Files (x86)\Microsoft Office\root\Office16\
• Older Office Versions (e.g., Office 2013): C:\Program Files\Microsoft Office\Office15\

How to Fix Errors Without Downloading

Do not download DLL files from third-party websites. They often contain malware. Use these official built-in tools instead:

1. Repair Microsoft Office

This replaces corrupt or missing Office components automatically.

• Press Windows Key + R.
• Type appwiz.cpl and press Enter.
• Find Microsoft Office (or Microsoft 365) in the list.
• Right-click it and select Change.
• Choose Quick Repair first.
• If that fails, run Online Repair.

2. Run SFC and DISM Scan

This fixes corrupted core Windows system files.

• Type cmd in the Windows search bar.
• Right-click Command Prompt and select Run as administrator.
• Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.
• Wait for it to finish.
• Type sfc /scannow and press Enter.
• Restart your computer.

3. Re-register the DLL

This forces Windows to look at the file correctly again.

• Open Command Prompt as administrator.
• Type regsvr32 olmapi32.dll and press Enter.
• If you get an error, navigate to the specific Office path first using the cd command (e.g., cd C:\Program Files\Microsoft Office\root\Office16), then run the command again.

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📊 Diagnostics Tool: Verify Your olmapi32.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
├── RPCRT4.dll
├── ADVAPI32.dll
├── ole32.dll
├── USER32.dll
├── GDI32.dll
├── VERSION.dll
└── SHLWAPI.dll

Microsoft Corporation