Forum Discussion

Gunnar-Haslinger's avatar
Gunnar-Haslinger
Iron Contributor
Oct 13, 2021

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 ...
danhoeger's avatar
danhoeger
Copper Contributor
May 31, 2023

Gunnar-Haslinger 

 

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.

Gunnar-Haslinger's avatar
Gunnar-Haslinger
Iron Contributor
May 31, 2023

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:

 

 

 

  • danhoeger's avatar
    danhoeger
    Copper Contributor
    May 31, 2023

    Gunnar-Haslinger 

    after setting these values and rebooting it seems to work now.

Resources