Forum Discussion
Edge v93 - v96 opens .MHT Files but shows no content ("white page")
Recently Edge started to be the Default File-Type-Association for .MHT Files. But it seems the .MHT-File-Support is not implemented to Support true multipart/related MIME encapsulation of aggregate ...
I know this is an old post but I'm seeing the same issue happening now with Edge V113 even with IE mode I tried the instructions included here but that didn't work.
Without setting policies .mht Files like I published in the given examples above won't work in Edge v113.
To get them to open in IE-Mode use following Policies:
1. Set "InternetExplorerIntegrationLevel" (I used Level 1 to test).
2. Set "InternetExplorerIntegrationLocalMhtFileAllowed" to 1
3. Set "InternetExplorerIntegrationLocalFileExtensionAllowList" -> "1" -> ".mht"
with those 3 policies set my Edge v113 opens .mht Files in IE-Mode by default and renders them correctly.
Here a Screenshot of my policies, filtered by "InternetExplorer":
Here a Link to my Test-MHT-Files: https://hitco.at/mht-test/
Here a Screenshot of an random .mht File, automatically opened in IE-Mode:
after setting these values and rebooting it seems to work now.
