- 1 year ago
Block a file with Powershell
To block a file in PowerShell, you can use the New-Item
cmdlet with the -Stream
parameter to create an alternate data stream with the name Zone.Identifier
. This stream is used by Windows to determine if the file is blocked or not. Here's how you can do it:
powershell# Replace "C:\Path\to\your\file.ext" with the path to the file you want to block
$filePath = "C:\Path\to\your\file.ext"
# Create the Zone.Identifier alternate data stream
$zoneIdStream = [System.IO.Path]::Combine($filePath, "Zone.Identifier")
New-Item -ItemType File -Path $zoneIdStream -Force
# Write the content to the Zone.Identifier stream to block the file
@"
[ZoneTransfer]
ZoneId=3
"@ | Out-File $zoneIdStream
After running this script, the file specified by $filePath
will be blocked by Windows and will not be allowed to run. Note that this technique creates an alternate data stream and does not modify the original file in any way.
To unblock the file, you can simply delete the Zone.Identifier
alternate data stream:
powershellRemove-Item -Path $zoneIdStream -Force
Please use this method responsibly and only block files if you are sure they are malicious or potentially harmful. Blocking legitimate files can cause problems and hinder normal system operations.