# IIS Issue

**URL:** <https://www.phphelp.com/t/iis-issue/22286>\
**Category:** PHP Installation and Configuration\
**Created:** [March 10, 2014, 5:13pm UTC](https://www.phphelp.com/t/iis-issue/22286 "2014-03-10T17:13:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![scottlpool2003](https://www.phphelp.com/letter_avatar_proxy/v4/letter/s/71e660/32.png) [@scottlpool2003](https://www.phphelp.com/u/scottlpool2003)\
**Post date:** [March 10, 2014, 5:13pm UTC](https://www.phphelp.com/t/iis-issue/22286/1 "2014-03-10T17:13:19Z")

</div>

I’m running Plesk with IIS 7.5.

Plesk doesn’t support PHP 5.5.8 so I had to add it manually via the IIS handler mappings. This has worked perfectly for weeks but today as I was working on a domain the handler mappings for the 2 domains that I switched to PHP5.5.8 reverted back to PHP5.

Obviously this caused the 2 domains to fail, and after hours of sieving through code I worked out that it was the handler mappings.

Any idea what could cause them to revert back as this is quite clearly a huge problem?

Cheers