we are experiencing an intermittent problem downloading files through Internet Explorer 11. The problem is isolated to users on Windows 10 (we are in the process of upgrading all machines to Windows 10, but these are fresh build from scratch instead of an in place upgrade). Other users on Windows 7 are not effected. At random points throughout the day, the users are unable to download files anymore (other browsers such as Edge and Chrome continue to work). On public internet sites they get an error saying 'The file could not be downloaded', and on our local intranet sites they get a different dialogue box in the middle of the screen saying 'What do you want to do with?download' (screen shot attached). Any file downloaded in this way will not open.
A reboot of the machine will fix the problem for a while, and then at a random point (anywhere between 1 hour to 12 hours) the problem comes back. Things that I have tried so far are:
1) removing all group policies associated with the machine and user
2) resetting Internet Explorer settings
3) Enabling the setting for "do not save encrypted pages to disk"
4) enabling "Windows Components/Internet Explorer/Security Features/Consistent Mime Handling" in Group policy
5) installing the latest windows updates
6) deleting the user profile and starting again
Deleting the user profile fixed the issue for a day, and then the problem came back. This is happening on newly built Windows 10 machines and the version that we are on is 1709 (OS Build 16299.64)
We need to use IE for a number of corporate applications otherwise we would just use another browser.
Any suggestions would be appreciated.