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Karen Payne
Karen Payne

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Mark of the web remover

Mark of the web remover

A utility to remove mark of the web from a folder recursively to all sub-folders.

If after downloading and un-zipping a archive file with perhaps a Visual Studio solution the files extracted may have been blocked, with this utility close Visual Studio, run this utility on the folder than re-open Visual Studio.

Current arguments (change to suite your environment)

Base code

public static void UnblockFiles(string folderName)
    if (!Directory.Exists(folderName))
        return ;

    var start = new ProcessStartInfo
        FileName = "powershell.exe",
        RedirectStandardOutput = true,
        Arguments = $"Get-ChildItem -Path '{folderName}' -Recurse | Unblock-File",
        CreateNoWindow = true, 
        UseShellExecute = false

    using var process = Process.Start(start);
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Without this tool a developer must right click on each and every file, go to properties and un-check mark of the web and click apply or write a PowerShell script (this tool uses PowerShell).

The only drawback is perhaps forgetting the tool name which is easy here. From a command window or PowerShell window type dotnet tool list --global and press enter.

screen shot

After the tool runs all files that may had mark of the web are devoid of mark of the web including all sub-folders.


dotnet tool install --global --add-source ./nupkg MarkOfTheWeb
dotnet tool uninstall -g MarkOfTheWeb
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Run without arguments

screen shot

Run with arguments

Here a .zip file was downloaded and files extracted which at that point several files had mark of the web.

Image description

Install from Nuget

dotnet tool install --global MarkOfTheWeb --version 1.0.1
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Full source

See the following GitHub repository.


For those who want to run in a terminal

dir -Path [directory path] -Recurse | Unblock-File
Get-ChildItem -Path '[directory path]' -Recurse | Unblock-File
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