What is rapimgr.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the rapimgr.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Rapimgr.exe file information

Windows Task Manager with rapimgr
Rapimgr.exe process in Windows Task Manager

The process known as ActiveSync RAPI Manager or srv Microsoft belongs to software Microsoft ActiveSync by Microsoft (

Description: Rapimgr.exe is not essential for the Windows OS and causes relatively few problems. Rapimgr.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\ or in C:\. Known file sizes on Windows 10/8/7/XP are 199,464 bytes (76% of all occurrences), 187,176 bytes, 180,224 bytes, 176,128 bytes or 203,560 bytes. 
The program is not visible. The rapimgr.exe file is not a Windows system file. The application listens for or sends data on open ports to a LAN or the Internet. The program can be removed using the Control Panel's Add\Remove programs applet. Rapimgr.exe is certified by a trustworthy company. Therefore the technical security rating is 39% dangerous, however you should also read the user reviews.

Uninstalling this variant: The developer Microsoft provides a website for help and for updates. There is also an uninstaller (Control Panel ⇒ Uninstall a Program ⇒ Microsoft ActiveSync).

Recommended: Identify rapimgr.exe related errors

Important: Some malware camouflages itself as rapimgr.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the rapimgr.exe 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

If you have a Sony cellphone and the file is not in the systemfolder, keep it. Make a search for hidden files.
  King Hans Sweden  
If a network connection cannot be established from the PDA to the PC, Active Sync will not be able to connect to the PDA.
It uses a lot of CPU, gonna boot it and see what happens. c ya maybe
Its part of microsoft's activesync. Used to connect a pda or other device to sync and transfer files from the pc to the device.
I use it with windows mobile to connect the phone to the PC using Activ sync
Part of ActiveSync. May be safe to kill it if it's hogging the CPU.
This has got installed without my knowledge, or when the mobile phone CD was installed, since then whenever the computer in booted, this runs the CPU at 100%, when disabled, CPU returns to 3 or 4% when idle, and the heat and the boost fan stops. could you please inform me if and how to disable or remove this safe without compromising the computer functions
Occupies TCP port 990 on all interfaces. Annoying because this port is reserved for the sftp service.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of rapimgr.exe: based on 31 votes with 9 reviews. 16 users think rapimgr.exe is essential for Windows or an installed application. 5 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 4 users suspect danger. 2 users think rapimgr.exe is dangerous and recommend removing it. 3 users don't grade rapimgr.exe ("not sure about it").

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Best practices for resolving rapimgr issues

A clean and tidy computer is the key requirement for avoiding problems with rapimgr. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the rapimgr.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

rapimgr.exe [all]