| 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 |
Similarly, Internet Explorer/Edge (legacy) blocks ActiveX controls on files marked from the Internet zone. Antimalware engines treat Internet‑zoned files with higher scrutiny. UAC prompts for such executables may include a more detailed warning about the file’s origin. The Security Rationale The Zone Identifier addresses a classic attack vector: social engineering via file download . windows zone download
It is called the . What Is the Zone Identifier? Introduced with Windows XP Service Pack 2 and refined in every subsequent version (including Windows 11), the Zone Identifier is an alternate data stream (ADS) —a metadata layer attached to a file without changing its visible content or extension. The Security Rationale The Zone Identifier addresses a
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.” Introduced with Windows XP Service Pack 2 and
echo . > "filename.exe:Zone.Identifier" (Overwrites the stream with empty data.)
Formally known as :Zone.Identifier , this ADS contains a single, crucial piece of information: the from which the file originated.