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SerialBlockedForUrls

  • Article

Block the Serial API on specific sites

Supported versions

  • On Windows and macOS since 86 or later

Description

Specifies URL patterns for sites that aren't allowed to request access to a serial port.

If not configured, Microsoft Edge uses the value from the DefaultSerialGuardSetting policy (if set), or the user's settings.

For unmatched sites, the following order applies:

  1. SerialAskForUrls (if matched).

  2. DefaultSerialGuardSetting (if set).

  3. User's settings.

URL patterns in this policy must not conflict with those in SerialAskForUrls. This policy takes precedence.

For detailed information about valid URL patterns, see https://go.microsoft.com/fwlink/?linkid=2095322.

Supported features

  • Can be mandatory: Yes
  • Can be recommended: No
  • Dynamic Policy Refresh: Yes
  • Per Profile: Yes
  • Applies to a profile that is signed in with a Microsoft account: No

Data type

  • List of strings

Windows information and settings

Group Policy (ADMX) info

  • GP unique name: SerialBlockedForUrls
  • GP name: Block the Serial API on specific sites
  • GP path (Mandatory): Administrative Templates/Microsoft Edge
  • GP path (Recommended): N/A
  • GP ADMX file name: MSEdge.admx

Example value

https://www.contoso.com

[*.]contoso.edu

Registry settings

  • Path (Mandatory): SOFTWARE\Policies\Microsoft\Edge\SerialBlockedForUrls
  • Path (Recommended): N/A
  • Value name: 1, 2, 3, ...
  • Value type: List of REG_SZ

Example registry value

SOFTWARE\Policies\Microsoft\Edge\SerialBlockedForUrls\1 =

https://www.contoso.com

SOFTWARE\Policies\Microsoft\Edge\SerialBlockedForUrls\2 =

[*.]contoso.edu

Mac information and settings

  • Preference Key name: SerialBlockedForUrls
  • Example value:
<array>
  <string>https://www.contoso.com</string>
  <string>[*.]contoso.edu</string>
</array>

See also