IIS 6.0, not using URLScan. URLs that point to documents that contain dots / periods in their filename fail to load. The same document minus the extra dots / periods, except for the one before the extension, work fine.
I've searched everywhere and not found a solution. URLScan has an option to toggle this, but IIS 6.0 doesn't need it. Plus, I've heard even installing URLScan over IIS 6.0 and enabling dots does NOT help.
IIS is setup to allow Parent Paths.
I've searched the registry and metabase for an appropriate setting to flip. No luck.