What is dasHost.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 dasHost.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.

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DasHost.exe file information

Windows Task Manager with dasHost
DasHost.exe process in Windows Task Manager

The process known as Device Association Framework Provider Host belongs to software Microsoft Windows Operating System or Device Association Framework Provider Host by Microsoft ( or Microsoft Windows.

Description: The original dasHost.exe from Microsoft is an important part of Windows, but often causes problems. DasHost.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 68,096 bytes (30% of all occurrences), 64,512 bytes, 67,072 bytes, 64,000 bytes or 45,056 bytes. 
The file is a Windows system file. It is a trustworthy file from Microsoft. The program is not visible. Therefore the technical security rating is 2% dangerous, however you should also read the user reviews.

Recommended: Identify dasHost.exe related errors

Viruses with the same file name

Is dasHost.exe a virus? No, it is not. The true dasHost.exe file is a safe Microsoft Windows system process, called "Device Association Framework Provider Host". However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are for instance Trojan.Gen (detected by Symantec), and Trojan-Ransom.Win32.Blocker.hziu (detected by Kaspersky).
To ensure that no rogue dasHost.exe is running on your PC, click here to run a Free Malware Scan.

How to recognize suspicious variants? If dasHost.exe is located in a subfolder of the user's profile folder, the security rating is 96% dangerous. The file size is 79,666 bytes. The program has no visible window. The process is loaded during the Windows boot process (see Registry key: Run). The dasHost.exe file is not a Windows system file. dasHost.exe appears to be a compressed file.

Important: Some malware disguises itself as dasHost.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the dasHost.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

In Windows 8 hat das Programm eine Herkunftsbeschreibung - Name, Hersteller, Version usw.
  Werner Poschmann  
Device Association Framework Provider Host Filename "dashost.exe" is used by Microsoft Windows System files - the file is a legitimate part of Windows 8, and in this MD5 variant is virus-free. - Safe
Richtig, Microsoft Dateisystem, jedoch völlig unbekannt warum es über UDP Port 3702 ins Internetzugreifen will!!! Daher beurteile ich es als gefährlich!
Windows 8.1 size: 94720
  Bruno Monteiro  
Es befindet sich im Original nur im "System32" Ordner. Allerdings wird der genaue Einsatzzweck nicht beschrieben... Durch mangelnde Info zum Zweck dieses Dienstes halte ich dieses File für zumindest fragwürdig.
  Torsten Schickert  
Ich beende diese Datei im Taskmanager regelmäßig und hatte bisher damit niemals ein Problem. Der versuch die Datei dasHost.exe komplett zu löschen, scheitert am Widerstand von Trust-irgendwas.
  Gerhard Pflugfelder  
supposedly Microsoft product

Rating chart

Summary: Average user rating of dasHost.exe: based on 9 votes with 7 user comments. 4 users think dasHost.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. One user suspects danger. One user thinks dasHost.exe is dangerous and recommends removing it. 2 users don't grade dasHost.exe ("not sure about it").

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Best practices for resolving dasHost issues

A clean and tidy computer is the key requirement for avoiding problems with dasHost. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the dasHost.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

dasHost.exe [all]