The Same Trouble Again in FMS10 Installation

I mentioned how to "forcibly" fix incompatibilities between FileMaker Server 9 Advanced, IIS, and Java in the article on June 16, 2008, and once again, the same trouble took place with FileMaker Server 10 Advanced!
Being a little smarter this time around, I fortunately found a way to handle this trouble without reinstalling Java, IIS, and FMS10.

The followings are what have happened and how I fixed the problem:

- What I did and what happened -
1. Uninstalled FMS9 first, since FMS9 had already been installed on this Windows Server 2003 to prevent incompatibility between FMS9 and FMS10.
2. Installed FMS10 and added php to IIS via FileMaker Server 10 Admin Console, however, the previously installed ASP.NET's behaviour became odd enough that my web browser would not load .aspx files any more.

* This trouble did not take place when I clean installed FMS10 on a 32-bit version Windows Server 2008, so the symptom could be caused if you uninstall an older version of FMS before installing FMS10 or try to reinstall FMS10.

- How I fixed it -
If you install FMS9/10 when the IIS has alreay ASP.NET installed, some parts of ASP.NET would stop functioning properly. So, you can fix this by reinstalling ASP.NET.

1. Just in case, take a backup of wwwroot and the subsidiary directories.
2. Install FMS10 and check out if your browser is able to load .aspx files from the web server. If not, go on to the next step.
3. Choose [Control Panel] -> [Add and delete programs] in Windows Server 2003, and highlight [Application Servers] from [Add and delete Windows components]. Click "Details...", deselect [ASP.NET] from the list shown, and click "OK."
4. Click "Next" to uninstall ASP.NET.
5. Restart IIS Admin Service and World Wide Web Publishing Service. Make sure ASP.NET is not listed on [Web Service Expansion] in the IIS.
6. Choose [Control Panel] -> [Add and delete programs] in Windows Server 2003, and highlight [Application Servers] from [Add and delete Windows components]. Click "Details...", tick off [ASP.NET] from the list shown, and click "OK."
7. Restart IIS Admin Service and World Wide Web Publishing Service. Make sure ASP.NET is listed with the version number on [Web Service Expansion] in the IIS.
8. Make sure that your web browser loads .aspx files properly. Also check out if php works accordingly.