What is ADC.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 ADC.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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ADC.exe file information

Windows Task Manager with ADC
ADC.exe process in Windows Task Manager

The process known as Active Desktop Calendar Application belongs to software Active Desktop Calendar or Active Desktop Calendar Application by XemiComputers ltd ( or Microsoft (

Description: ADC.exe is not essential for the Windows OS and causes relatively few problems. The file ADC.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 5,726,720 bytes (8% of all occurrences), 5,730,304 bytes and 26 more variants. 
ADC.exe is not a Windows core file. ADC.exe is able to record keyboard inputs. The application can be removed using the Control Panel's Add\Remove programs applet. ADC.exe is able to record keyboard and mouse inputs and manipulate other programs. Therefore the technical security rating is 70% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can uninstall the program Active Desktop Calendar or Microsoft Active Directory, update it, or try to get help from the software vendor. Click on to update it, click on to visit the vendor's website, or click on Active Desktop Calendar or Microsoft Active Directory in Windows Control Panel (section Software or Programs) to uninstall it.

Recommended: Identify ADC.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as ADC.exe. Therefore, you should check the ADC.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

Activ Desktop Calendar : Xemi Computers ltd.
Caledar Software
    (further information)
It is the exe of a good calender on your desktop
It is an Calendar application which show info on desktop
  Rahul   (further information)
Absolutely love this app. but do think its dangerous. Questions that I still have not answered is, Why does it record keyboard inputs? This worries me. Recently I had my pc infected & was only able to clean it after unistalling ADC, the mouse hook dll seemed to create or was somehow responsible. This is all my opinion & I admit that I am no expert.
  Kevin Robb  
I am also concerned it's recording keystokes, not sure why it would have to do that.
Active Desktop Calendar. Safe Program. I Scanned Computer With The Top Rated Spyware Programs. It didn't pop up with this!
It comes from Active Desktop Calendar
  Jeff Williams   (further information)
Active Desktop Calendar
Active Desktop Calendar CAN be used without activating mousehook.dll You won't be able to click on Desktop components to access the calendar background stuff, but you can still get to it by right clicking on the tray icon.

Rating chart

Summary: Average user rating of ADC.exe: based on 12 votes with 10 user comments. 9 users think ADC.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving ADC issues

A clean and tidy computer is the key requirement for avoiding problems with ADC. 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 ADC.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

ADC.exe [all]