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  • Nick Lewis 30 posts 138 karma points
    Nov 17, 2020 @ 18:12
    Nick Lewis
    0

    Assembly manifest issue when deploying my Umbraco 8 site to Windows Server 2019

    I am seeing an error:

    "Could not load file or assembly 'System.Threading.Tasks.Extensions' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"

    I set up a new Windows Server 2019 instance with IIS and SQL server installed. I then published my project from Visual Studio and copied the files over via RDP.

    I get the above error and need some help please :-)

    Has anyone else come across this?

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