Heads up for ISA Admins

Today, Philipp Sand, from Forefront ISA/TMG team published a blog post about a specific case where the ISA firewall process (wspsrv.exe) leaks memory if installed a Windows optional update and you use ISA connection verifier to check connectivity against web servers that uses Windows Integrated authentication.

If your ISA firewall is running under a heavy load environment, then the recommendation is to not install KB971737. Otherwise, ISA firewall will behave as described in his post.

Keep in mind that is always recommended and best practice to test an update into a test lab before release it to production servers, even though, the update it is not intended to ISA firewall itself. Remember ISA takes advantages of Windows resources for most of it’s tasks.


Paulo Oliveira.

Update: Changed the name of the blog post author, according to Yuri’s comment.

This entry was posted in ISA Server, Troubleshooting, Windows Server and tagged , , , , . Bookmark the permalink.

3 Responses to Heads up for ISA Admins

  1. Just to make a correction, who wrote the article was Philipp Sand and was Tech Reviewed by Lars Bentzen. The reason it appears Ori’s name there is because the post was published under his account.


  2. Thanks Yuri! I really missed it 😦

    Sorry Philipp, I will update it.

    Paulo Oliveira.

  3. uilson76 says:

    Great Paulo! It’s gonna help us at all!

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