What is PTBSync.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 PTBSync.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 PTBSync.exe related errors

PTBSync.exe file information

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

The process known as Desktop Organizer or Atomuhr Synchronisation + Terminkalender belongs to software PTBSync (Atomuhr Synchronisation or PTBSync (Atomuhr by Elm├╝Soft (

Description: PTBSync.exe is not essential for the Windows OS and causes relatively few problems. PTBSync.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 1,586,688 bytes (17% of all occurrences), 1,582,592 bytes and 11 more variants. 
The PTBSync.exe file is not a Windows core file. The program has no visible window. The process starts upon Windows startup (see Registry key: MACHINE\Run, Run, User Shell Folders). It can change the behavior of other programs or manipulate other programs. PTBSync.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 55% dangerous; however you should also read the user reviews.

Uninstalling this variant: You could completely remove PTBSync (Atomuhr Synchronisation & or PTBSync (Atomuhr (Control Panel ⇒ Uninstall a Program).

Recommended: Identify PTBSync.exe related errors

If PTBSync.exe is located in the C:\Windows folder, the security rating is 64% dangerous. The file size is 213,504 bytes. There is no description of the program. The file is an unknown file in the Windows folder. The program is not visible. The process starts when Windows starts (see Registry key: MACHINE\Run, Run, User Shell Folders). PTBSync.exe is not a Windows system file. PTBSync.exe is able to record keyboard and mouse inputs.

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

PTB Sync: Atomuhr
stellt die systemuhr
Great trayclock utility with calendar
    (further information)

Rating chart

Summary: Average user rating of PTBSync.exe: based on 14 votes with 3 user comments. 12 users think PTBSync.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving PTBSync issues

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

PTBSync.exe [all]