topic Re: .NET 7 applications being blocked by Harmony in Endpoint

.NET 7 applications being blocked by Harmony

Henrik_J — Thu, 26 Jan 2023 17:40:08 GMT

Hello!

I have an issue where a user's own coded .NET 7 applications are being blocked (.exe).

Anyone else also experiencing this?

If not, how do I even go about excluding these type of self-coded scripts?

Seems to work with other .NET versions, just 7 that has this issue.

Re: .NET 7 applications being blocked by Harmony

the_rock — Thu, 26 Jan 2023 19:19:20 GMT

I dont believe there is special method to it, you simply exclude or block file types. Do you see specific log about it?

Re: .NET 7 applications being blocked by Harmony

Henrik_J — Thu, 26 Jan 2023 19:33:28 GMT

Re: .NET 7 applications being blocked by Harmony

the_rock — Thu, 26 Jan 2023 19:36:50 GMT

You can add any file type as exclusion, you just need to know what blade it is and what policy is referring to. Sorry, Im way more firewall, rather than endpoint guy, but thats how customers fix these issues. Do you have any exclusions set currently?

Re: .NET 7 applications being blocked by Harmony

Henrik_J — Thu, 26 Jan 2023 20:07:39 GMT

Yeah I think the only way to do anything about this, is to exclude the whole work folder, or the exe files lol.

Which doesn't sound that secure.

Re: .NET 7 applications being blocked by Harmony

the_rock — Thu, 26 Jan 2023 20:11:00 GMT

Well, I hate to put it this way, bit thats how it goes in IT world...security vs connectivity. Anyway, based on the log you sent, I cant think of any other logical way to make this work. Its clear that endpoint is blocking the file...I bet that if you tried it on PC with standalone VPN client (NO edr capabilities) that it will work 100%.

Re: .NET 7 applications being blocked by Harmony

_Val_ — Fri, 27 Jan 2023 12:34:32 GMT

Please open a TAC case about it.