How to Fix Missing Mapi32.dll Error


Dll is the abbreviation of Dynamic Link Libraries which is used by Windows applications to run and perform optimally. It is the collection of modules which contains data and functions. Dll files are essential system components that will cause errors if they are not complete. It may be resulted from corruption of the files or deletion.

Mapi32.dll is mainly used by the Windows Messaging API. If Mapi32.dll is missing or corrupted, the program you need will not run properly.


Causes of Mapi32.dll Error:


  • Windows Temporary swap file is corrupted.
  • Registry entries files are corrupted.
  • Computer hardware encounters problem.
  • The installation of software is improper.
  • Your computer is infected with viruses or Trojan.


How to Fix Mapi32.dll Error?


STEP 1 Download Smartpcfixer & Install it. (Note: If the download link doesn’t work you may need to download it from a Download Mirror). SmartPCFixer™ will help identify and fix Windows’ invalid registry entries. By running Scan & Cleaner as part of scheduled maintenance, it will keep your PC from freezing or frequent crashes. Using it will reduce the probability of you getting a “blue screen”, program not responding or lock up.

STEP 2 Scan Your PC for Errors.

STEP 3 Click the “Fix All” Button to Repair Your PC.

What’s more, you can download Mapi32.dll, Save it to:


Then use SmartPCFixer to register the dll:

How to re-register dll by SmartPCFixer:

Run SmartPCFixer, click ‘system fix’ -> activex register

Then click’re-register’ button.