The genuine dfsvc.exe file is a software component of Microsoft .NET Framework by Microsoft Corporation.
"Dfsvc.exe" is the name of Microsoft's ClickOnce Launcher Engine, when it is in "C:\Windows\Microsoft.NET\Framework\v2.0.50727" or "…\v4.0.30319". Installing the .NET Framework v4.0 with a newer "dfsvc.exe" version may help solve some problems. ClickOnce technology aids in centralized enterprise deployment of applications and also in downloading or executing them from Web pages. It addresses permissions and security for an entire ClickOnce app as one entity, not by its individual code assemblies. "Dfsvc.exe" begins a deployment by executing a "deployment manifest" XML file with the suffix ".application", usually set up by administrators, specifying the level of permission the app requires. The developer usually creates the application manifest (".manifest") XML file which executes next. The application itself is a separate file. Sometimes the W32/MYFIP.A worm, (now up to ".K") deposits a corrupted "dfsvc.exe" file; the worm steals intellectual property by sending copied files to Chinese servers.
DFSvc stands for ClickOnce App Deployment Fulfillment Service
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 dfsvc.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.
Description: Dfsvc.exe is not essential for the Windows OS and causes relatively few problems. Dfsvc.exe is located in a subfolder of C:\Windows—usually C:\Windows\Microsoft.NET\Framework\v2.0.50727\.
Known file sizes on Windows 10/8/7/XP are 5,120 bytes (42% of all occurrences), 11,592 bytes and 9 more variants.
The program is not visible. Dfsvc.exe is not a Windows system file. The file has a digital signature. dfsvc.exe appears to be a compressed file. Therefore the technical security rating is 26% dangerous, but you should also take into account the user reviews.
Recommended: Identify dfsvc.exe related errors
External information from Paul Collins:
Important: Some malware camouflages itself as dfsvc.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the dfsvc.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.
A clean and tidy computer is the key requirement for avoiding problems with dfsvc. 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 dfsvc.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.