[xdebug-general] Eclipse is stuck at Waiting for Xdebug session... progress at 48%

Debugging with Eclipse and Xdebug does not appear to be working.
Breakpoints do not break; code just runs without breaking. I have read
of this problem in other forum posts but there is no solution that works
for me.

Here is what happens:
I launch an Eclipse Debug Configuration to start debugging.
Eclipse loads the starting file (which is HTML only in this case) in
Firefox with the Xdebug parameter:
?XDEBUG_SESSION_START=ECLIPSE_DBGP&KEY=14840873439273
Eclipse shows Launching: Waiting for Xdebug session... progress shows 48%
When I terminate the debugging session in Eclipse another copy of my
starting file is loaded in Firefox with another Xdebug parameter:
?XDEBUG_SESSION_STOP_NO_EXEC=ECLIPSE_DBGP&KEY=14840873439273
There does not seem to be a connection between Eclipse and Xdebug

I have checked everything I can think of.
netstat shows:
   TCP 0.0.0.0:9000 computer:0 LISTENING
  [eclipse.exe]

I added the a log name to Xdebug but none of my attempts created any log
file and certainly not any entries in a log file.

I have focused on Xdebug as the problem because of other posts about
Eclipse Waiting on Xdebug 48% messages.
I tried Xdebug 2.4.1 but the results were the same: Waiting at 48%

Does anybody have any ideas what I should do?

More details about my setup:

I'm on Windows 10 64-bit
I had set up Eclipse and Xdebug previously on a Windows 7 machine
I was rebuilding my environment and downloaded:
XAMPP Version 5.6.28
Eclipse Neon.2 Release (4.6.2) (64-bit)
Java runtime 8 111 (64-bit)
Xdebug 2.5.0 (|php_xdebug-2.5.0-5.6-vc11.dll|)

Xdebug install Summary:
Xdebug installed: 2.5.0
Server API: Apache 2.0 Handler
Windows: yes - Compiler: MS VC11 - Architecture: x86
Zend Server: no
PHP Version: 5.6.28
Zend API nr: 220131226
PHP API nr: 20131226
Debug Build: no
Thread Safe Build: yes
Configuration File Path: x:\window
Configuration File: x:\xamp\php\php.ini
Extensions directory: x:\xamp\php\ext

My additions to php.ini are:
zend_extension=x:\xamp\php\ext\php_xdebug-2.5.0-5.6-vc11.dll
xdebug.profiler_output_dir="x:\xamp\tmp"
xdebug.remote_enable=on
xdebug.remote_log="x:\xamp\tmp\xdebug.log"
xdebug.trace_output_dir="x:\xamp\tmp"

These php.ini updates are confirmed in phpinfo(). The file paths have
been changed for public consumption.
Received on Fri Jan 13 2017 - 20:34:14 GMT