What is ocmapihk.dll?

Ocmapihk.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if ocmapihk.dll is a Windows system file or if it belongs to an application that you can trust.

Click to Run a Free Scan for ocmapihk.dll related errors

Ocmapihk.dll file information

The process known as PGP MAPI Hook DLL belongs to software PGP Desktop or PGP or PGP Universal by PGP (

Description: Ocmapihk.dll is not essential for the Windows OS and causes relatively few problems. Ocmapihk.dll is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 49,152 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. There is no information about the author of the file. The program has no visible window. There is no detailed description of this service. It can change the behavior of other programs or manipulate other programs. It is not a Windows system file. The software can be uninstalled in the Control Panel. The application starts upon Windows startup (see Registry key: AppInit_DLLs). Therefore the technical security rating is 68% dangerous; however you should also read the user reviews.

Uninstalling this variant: You could safely remove the program using the uninstall program of PGP Desktop or PGP Universal (Control Panel ⇒ Uninstall a Program).

Recommended: Identify ocmapihk.dll related errors

Important: Some malware disguises itself as ocmapihk.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the ocmapihk.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Part of PGP9
  Rico   (further information)
Part of PGP Desktop, PGP Encryption Software
  Damien Jorgensen   (further information)
Used by PGP to process MAPI communications.
PGP Desktop
  T   (further information)
Part of PGP 9 Desktop
ocmapikh.dll is used for the encryption program PGP
  Adam   (further information)
Part of PGP Desktop, PGP Encryption Software See also:
  ami from avnet   (further information)
Part of PGP9
Part of PGP 9
  Descartes   (further information)

Rating chart

Summary: Average user rating of ocmapihk.dll: based on 12 votes with 9 user comments. 11 users think ocmapihk.dll is essential for Windows or an installed application. One user thinks it's probably harmless.

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Best practices for resolving ocmapihk issues

A clean and tidy computer is the key requirement for avoiding problems with ocmapihk. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ocmapihk.dll process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ocmapihk.dll [all]