DLL

MSMAPI32.DLL

Download and install MSMAPI32.DLL to fix missing or corrupted DLL errors.

(15 Files Available)
Last Updated
Downloads

Repository Analysis

Company
Microsoft Corporation
Product
Microsoft Outlook
Description
Extended MAPI 1.0 for Windows NT
Architecture
x86-64 (64 bit) x86 (32 bit)
Metadata Consensus
14/15 Files 93.3%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Frequently Asked Questions

What is MSMAPI32.DLL?

Metadata analysis shows MSMAPI32.DLL is a Dynamic Link Library (DLL) developed by Microsoft Corporation for Microsoft Outlook and is described as “Extended MAPI 1.0 for Windows NT” .

DLL files (Dynamic Link Libraries) are shared core modules used by Windows programs to run efficiently without duplicating code. Most errors occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application, repairing Windows, or replacing the DLL resolves the issue.

How do I fix missing DLL errors?
1

Software Fix

Fully uninstall and reinstall the program causing the error. If you are not sure what program is broken, look at the available file metadata above for hints. If a clean reinstall fails, download and install the DLL file manually.

2

Windows System Fix

Make sure Windows is fully updated. To repair system files automatically, right-click the Start menu, open PowerShell (Admin), and run these two commands in order:

Step A DISM /Online /Cleanup-Image /RestoreHealth
Step B sfc /scannow
How do I install DLL files?
1

Download & Extract

Download the file, right-click the folder, and extract all files to your computer.

2

Install the .DLL

Move the extracted DLL file into the root folder of the software that is giving you the error (where its .exe file is located), or place it in the system directory below:

32-bit → C:\Windows\SysWOW64
64-bit → C:\Windows\System32
3

Restart the Program

Close and reopen the program or game so Windows can look for and load the new DLL file.

How do I register DLL files?

Most DLL files do not need registration. However, if your file is a COM component and requires explicit system registration, follow these steps:

1

Open Terminal

Right-click the Start menu and open PowerShell (Admin) or Command Prompt (Admin).

2

Run Command

Type the command below for your file type and press Enter. You can drag and drop the DLL file directly into the terminal window to fill its path automatically.

64-bit regsvr32 "C:\path\to\filename.dll"
32-bit C:\Windows\SysWOW64\regsvr32 "C:\path\to\filename.dll"

Latest Releases

MSMAPI32.DLL
by Microsoft Corporation
for Microsoft Outlook
Extended MAPI 1.0 for Windows NT
Version: 16.0.19426.20218 Verified
Product Version: 16.0.19426.20218
Language: U.S. English (1033)
Uploaded: Dec 24, 2025   Size: 99.7KB
SHA256: 326be6992ad4e843a75ad12ae8f9a9a15948b88b5ed3ca10e29999d0ae80e4d8
SHA1: c6b319c0d86763804033b5e520a5ca56d9123d3a
MD5: e51c51c16ab26ffd944bc605920c420c
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
MSMAPI32.DLL
by Microsoft Corporation
for Microsoft Outlook
Extended MAPI 1.0 for Windows NT
Version: 16.0.19127.20064 Verified
Product Version: 16.0.19127.20064
Language: U.S. English (1033)
Uploaded: Nov 24, 2025   Size: 87.8KB
SHA256: c9f0441de4d7579b16f4df5cdf274b3d124fa9227272d9e47fdfe3e7bf364c1a
SHA1: 3c7f4e6424329f401aeac7901259be998bd6f2dd
MD5: ba0b7cbe814ca62cb6bcb9328b09626c
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
MSMAPI32.DLL
by Microsoft Corporation
for Microsoft Outlook
Extended MAPI 1.0 for Windows NT
Version: 16.0.18227.20002 Verified
Product Version: 16.0.18227.20002
Language: U.S. English (1033)
Uploaded: Dec 27, 2024   Size: 95.7KB
SHA256: dc4e56e2633c371ce15b2063afb422c34f05229ca3e9f2819efa58b8a50c6384
SHA1: 5d31d2a20caf9961dca16313e73ff359e1c645a5
MD5: f18dde8eb82e351a1cd21c8d771cb8be
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
MSMAPI32.DLL
by Microsoft Corporation
for Microsoft Outlook
Extended MAPI 1.0 for Windows NT
Version: 16.0.17425.20008 Verified
Product Version: 16.0.17425.20008
Language: U.S. English (1033)
Uploaded: Aug 5, 2024   Size: 96KB
SHA256: f97381245ed0d78907bd5e5d345a84cc5523ee53bb68e7398ca696fd1be7097a
SHA1: 28ec947ebf8cea37686059c4ee6820231f502ef9
MD5: ef4b782c2d197283868823937110668e
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
MSMAPI32.DLL
by Microsoft Corporation
for Microsoft Outlook
Extended MAPI 1.0 for Windows NT
Version: 16.0.17328.20004 Verified
Product Version: 16.0.17328.20004
Language: U.S. English (1033)
Uploaded: Mar 12, 2024   Size: 96.2KB
SHA256: 79a8cb7e56ea2a82abfd4badadc70ccef62e5574420ea0b85e6a44ba265ed6e9
SHA1: d2edef349215f3777e4ee69e21c63c2f7ba9458d
MD5: 94fdd4a143c69ea8d0b2835ef073cae8
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD