Change the maximum number of connections per host (HTTP 1.1)
- Policy ID
- IESF_MaxConnectionPerServer
- Scope
- Computer Configuration, User Configuration
- Supported on
- At least Internet Explorer 8.0
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › Internet Explorer › Security Features › AJAX
Description
This policy setting allows you to change the default connection limit for HTTP 1.1 from 6 connections per host to a limit of your choice (from 2 through 128).
If you enable this policy setting, Internet Explorer uses the connection limit of your choice for HTTP 1.1.
If you disable or do not configure this policy setting, Internet Explorer uses the default connection limit for HTTP 1.1 (6 connections per host).
In versions of Internet Explorer before Internet Explorer 8, the default connection limit for HTTP 1.1 was 2.
Options
Registry
ComputerHKEY_LOCAL_MACHINE
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER View registry values
- iexplore.exeREG_DWORD
UserHKEY_CURRENT_USER
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER View registry values
- iexplore.exeREG_DWORD