Notes about the DOWNLOADHOST file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The DOWNLOADHOST file type is primarily associated with 'MSN Explorer' by Microsoft Corporation. If you are an MSN subscriber and having trouble with their service please contact MSN support for help. This file type seems to pop up now and again when it can't be found by the MSN Download Manager (View | Download Manager on the MSN menu). If you have a specific problem with the .DOWNLOADHOST file extension you can try this solution: Click on the Start and then Run items. In the dialog box type:regsvr32 c:\progra~1\msn\msncorefiles\msnmetal.dll
...and then click on OK or press the Enter key (use cut/paste to be certain you've got it right). In case it wraps in your display, this is all one line with a space between the regsvr32 and pathname. This reregisters the msnmetal.dll file and solves the problem. If you are signed into MSN, sign out and then sign back in and everything should work OK. If, for some reason it does not, please contact MSN support.
Detailed information for file extension DOWNLOADHOST:
Program ID: MSNExplorer.Download.View
Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.