Checking and clicking OK removes the Zone Identifier entirely (deletes the ADS). The file then behaves as if it originated locally. 3. Office Macro & ActiveX Blocking Microsoft Office (Word, Excel, PowerPoint) reads the Zone Identifier. If you open a document downloaded from the internet ( ZoneId=3 ), Office opens it in Protected View —a read‑only, sandboxed mode that disables macros, editing, and external links until you explicitly click “Enable Editing.”
Unblock-File -Path "C:\path\to\file.exe"
[ZoneTransfer] ZoneId=3 The ZoneId can be one of four values: windows zone download
| ZoneId | Name | Description | |--------|------|-------------| | 0 | My Computer | Local machine (trusted; rarely set by downloads) | | 1 | Local Intranet | Internal corporate network | | 2 | Trusted Sites | Sites explicitly added to Trusted Sites list | | 3 | Internet | The public web (default for most downloads) | | 4 | Restricted Sites | Potentially dangerous or blocked sites |
Get-Content -Path ".\filename.exe" -Stream Zone.Identifier If the file was downloaded from the Internet, you will see ZoneId=3 . If the file was created locally or has been unblocked, you will see an error (no stream). Method 1 – Unblock Checkbox Right‑click file → Properties → Check “Unblock” → OK. Checking and clicking OK removes the Zone Identifier
How the Zone Identifier Affects Downloads The Zone Identifier is not just a label—it triggers actual behavioral changes in Windows and applications. 1. SmartScreen & Reputation Checks When you double-click a downloaded executable ( .exe , .msi , .ps1 , etc.), Windows checks the Zone Identifier. If ZoneId=3 (Internet), SmartScreen evaluates the file’s reputation. Unknown or suspicious downloads trigger a full-screen red warning: “Windows protected your PC” . 2. The "Unblock" Checkbox Right-click a downloaded file → Properties . You will often see a security message at the bottom: “This file came from another computer and might be blocked to help protect this computer.” Next to it is an Unblock checkbox.
Formally known as :Zone.Identifier , this ADS contains a single, crucial piece of information: the from which the file originated. Office Macro & ActiveX Blocking Microsoft Office (Word,
When you download a file using most modern browsers (Chrome, Edge, Firefox), email clients, or instant messengers, Windows automatically writes a marker into this ADS. The marker looks like this: