avgsvca.exe is a application which is most likely legit. So, if avgsvca.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your PC is virus-free, it is still recommended to purchase a good antivirus with a good detection rate, in order to yourself your system against viruses and malware.
This application is normally found in C:\Program Files (x86)\AVG\Framework\Common\avgsvca.exe.
The MD5 checksum for this executable is a994548b7f442ce9653d1569bb91cd17.
This program is set up as a Windows service. This means it operates on your system in background, usually without displaying anything to you. Most Windows services are legit programs, which provide useful functions to other programs or to Windows in general.
This program uses the Internet to communicate. In this day and age this is expected from a program. For example, most of the apps on your computer check for new updates. In order to do this, Internet communications are required.
This is a 64-bit executable. It uses the full capacity of nowadays' CPUs.
The description present in the exe is AVG Service Process.
File version stored as a property 126.96.36.19946.
Publisher AVG Technologies CZ, s.r.o..
Copyright notice Copyright (C) 2014 AVG Technologies CZ, s.r.o..
avgsvca.exe has a digital signature. Today most legit programs are digitally signed.
The digital signature attached to avgsvca.exe is valid. This is most likely a clean, ok program.
Digitally signed by: AVG Technologies CZ, s.r.o.
Certificate's issuer name: VeriSign Class 3 Code Signing 2010 CA
This program does NOT have an uninstall routine stored in registry.