Version of FMPA 11? (11 ver 03 is current)
Troubleshooting FileMaker Web Sharing in FileMaker Pro (not very helpful)
Has any other installs of Filemaker been on the computer? Were they uninstalled or trashed manually?
The port being used is the default Port 80, or the recommended Port 591?
There is a system cleanup utililty called ccleaner that removes temp files (even invisible).
It is not guaranteed that this will work, but is an obvious first step.
FMPA version 11.0 v3
None other install of FMPA has been on this computer. On my partner's PC Instant Web Publishing works perfectly. Same FMPA, same Windows, same PC! Bizzare, isn' it?
I cannot change Port because the "Advanced" button is inactive.
I know ccleaner, I used it, although I prefer System Mechanic for cleaning my computers, but nothing happened.
Still does not work...
If your partner's PC is running the same serial number of FMPA and is on the same network.
It is possible that that is where the conflict comes in, disconnecting your PC would not be viable
Shutting down his computer (even if his computer is not running FMPA, there could be a background IWP thingy active)
A firewall blocking the port requested COULD cause an error message pointing in the wrong direction.
Running two firewalls is seldom a good idea.
There could be another utility causing the error, booting in Safe Boot may be a useful test (tapping F8 key before Win Start Screen)