What is GoogleCalendarSync.exe?

The genuine GoogleCalendarSync.exe file is a software component of Google Calendar Sync by Google.
GoogleCalendarSync.exe is an executable file that runs the Google Calendar Sync, a program that syncs calendar events between Google Calendar and Microsoft Outlook. This is not a critical Windows component and should be removed if known to cause problems. Google Calendar Sync is a simple freeware program that copies data from Google Calendar to Microsoft Outlook and vice versa. The program can be configured to automatically synchronize data if needed and can also make itself present in the system tray to be easily accessed. The events in Google Calendar can be easily accessed and edited through Google's web interface. Google was founded in 1998 by Larry Page and Sergey Brin, Ph.D. students at Stanford. Google has since grown into one of the biggest companies in the world, offering hundreds of services, including webmail (Gmail), cloud storage (Google Drive), office software (Google Docs) and social networking services (Google+). Alexa, which provides web traffic data, lists Google as the world's most visited website. Its popularity has led to huge media coverage, including a major critique of the company over copyright, censorship, and privacy issues. Google is headquartered in Googleplex, Mountain View, California, USA.

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 GoogleCalendarSync.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.

Click to Run a Free Scan for GoogleCalendarSync.exe related errors

GoogleCalendarSync.exe file information

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

The process known as Google Calendar Sync belongs to software Google Calendar Sync by Google (

Description: GoogleCalendarSync.exe is not essential for Windows and will often cause problems. GoogleCalendarSync.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 542,264 bytes (40% of all occurrences), 542,192 bytes or 546,288 bytes. 
The file is a Verisign signed file. GoogleCalendarSync.exe is certified by a trustworthy company. It is not a Windows core file. The application is loaded during the Windows boot process (see Registry key: MACHINE\User Shell Folders). The program has no visible window. Therefore the technical security rating is 27% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with Google Calendar Sync occur, you can also completely remove it (Control Panel ⇒ Uninstall a Program).

Recommended: Identify GoogleCalendarSync.exe related errors

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

Syncronisierung von Outlook mit dem Googel Kalender

Summary: Average user rating of GoogleCalendarSync.exe: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

Do you have additional information? Help other users!
What do you know about GoogleCalendarSync.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving GoogleCalendarSync issues

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

GoogleCalendarSync.exe [all]