Microsoft SQL Desktop Engine (MSDE) installs along with ISA Server 2006. Later on, you might find yourself not requiring to log to the local MSDE. You can change the default logging option from MSDE to another storage format , such as to File Format, MS
Access database, or maybe to a Local / Remote SQL Server 2005. In this article I will walk with you step by step showing you how to uninstall MSDE from your ISA Server 2006 machine.
The following steps shows you how to uninstall MSDE from your ISAFile Format, MS database, Local or remote SQL Server )
To do this, from the left panel, click on the Monitoring node, and then from the middle page, click on the
Logging tab
From the right side panel, click on Configure Firewall Logging then under the
Select Log Storage format, select the storage format you want ( File Format , SQL Server ), then click
OK
Again, from the right side panel, click on Configure Web Proxy Logging, then under the
Select Log Storage format, select the storage format you want ( File Format , SQL Server ), then click
OK
Once the new logging format is set, click on Apply
Now we are ready to uninstall MSDE, go to Control Panel and open
Add/Remove programs
Select Microsoft ISA Server 2006 then click on the Change/Remove
button
The Microsoft ISA Server 2006 Installation Wizard will start, click on
Next
On the Program Maintenance page, Choose Modify
and click Next
Expand Firewall Services and click Advanced Logging, as you can see
on the right side under the Feature Description, this Installs Microsoft SQL Desktop Engine (MSDE)
Click on the Arrow 
beside
Advanced Logging, and click on This feature will not be available, Click
Next
On the Ready to Modify the Program page, Click Install
Once the Install button is clicked, the installation wizard will start uninstalling MSDE.
Summary
It is possible to uninstall MSDE from your ISA Server machine, but first make sure that you change its logging type. You might change the logging type from MSDE to File Format, MS Access Database, or even to a local or remote SQL Server, for example
SQL Server 2005
[ This article is posted at ElMajdal.Net website : http://www.elmajdal.net/ISAServer/Uninstalling_MSDE_From_ISA_Server_2006.aspx ]
