crackserver-service.exe has links to viruses and adware. Backup your PC and delete this file, or perform a free scan of your PC to be certain.

crackserver-service and it's associated process, AdClicker Spyware, are known to be a type of virus. Viruses and adware can be very tricky. Malware creators know their files will be removed if found, so they sometimes give the files names that are similar to known non-harmful files.

This free scan of your PC will help you to not delete any essential programs.

Since crackserver-service.exe was found on your PC, there's probably more viruses or spyware you haven't discovered. You can avoid future problems with viruses and adware by using this free PC scanning tool.

cmanager.exe, and it's process, PC Manager, are not spyware or viruses and are safe to have on your system.

Malware and spyware sometimes use the same filename as important files, so it is a good idea to scan your system to be sure.

Get a free scan of your system by clicking this link.

na1msgr.exe, and it's processes have not been tested thoroughly enough yet to state definitely if they are harmful or not. If you are familiar with this file or process, please post a comment with your experience with na1msgr.exe.

Malware and viruses can infect your PC very easily, even if you only surf the internet.

The best way to avoid problems with malware and other types of malware is to scan your PC for free and get rid of all the rogue files right now.