Access Forbidden: Too many users are connected to Internet Information Services

This error occurs a lot on a Windows XP machine when running websites. This is because Microsoft have built in a limit of 10 connections into the XP IIS.

This limit can be bumped to 40 connections by using the ADSUTIL.vbs script.

The script is located in your C:\WINDOWS\ServicePackFiles\i386\ folder.

To bump the connection to 40, use the following:

adsutil set w3svc/MaxConnections 40

You can also disable the HTTP Keep-alives in your IIS. It reduces performance but since your machine is a developer machine anyway it probably doesn’t matter.


About briancaos

Developer at Pentia A/S since 2003. Have developed Web Applications using Sitecore Since Sitecore 4.1.
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