dasHost.exe (Device Association Framework Provider Host) is a file provided by Microsoft and used in Windows operating systems. Under normal circumstances, it should not be moved or deleted because it is needed for certain operations.

It is used to connect wireless and wired devices to the computer, such as a printer or mouse. You will probably only see it if you browse through Task Manager; it is listed with other running services. It is also visible in the System32 folder.

Normally, this file is 100 percent threat-free and does not cause any problems. However, if you see multiple dasHost.exe files running or if one or more of them are taking an excessive amount of CPU or memory, you should investigate further to see if it is a virus.

There is actually only one dasHost.exe file that your computer needs to successfully connect devices. Therefore, any other files you find are unnecessary and can be safely removed manually or with a malware removal tool.