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EXE ("executable") files, such as App Sync.exe, are files that contain step-by-step instructions that a computer follows to carry out a function. Every software application on your PC uses an executable file - your web browser, word processor, spreadsheet program, etc.
When you "double-click" an EXE file, your computer automatically executes these instructions designed by a software developer (eg. - making it one of the most useful kinds of files in the Windows operating system.
Thus, any executable files that you download to your PC should be scanned for viruses before opening - even if you think it is from a reputable source.
Keeping track of when and where your App error occurs is a critical piece of information in troubleshooting the problem.
App problems can be attributed to corrupt or missing files, invalid registry entries associated with App Sync.exe, or a virus / malware infection.
A backup is automatically created before each scan, with the ability to undo any changes in a single click, protecting you against the possibility of PC damage.
The best part is that repairing registry errors can also dramatically improve system speed and performance.