Apache cant start

[RB1000]

when i try to run apache it say this error in the log file

[notice] Digest: generating secret for digest authentication ...
[notice] Digest: done
[notice] Apache/2.2.14 (Win32) DAV/2 mod_ssl/2.2.14 OpenSSL/0.9.8l mod_autoindex_color PHP/5.3.1 mod_apreq2-20090110/2.7.1 mod_perl/2.0.4 Perl/v5.10.1 configured -- resuming normal operations
[notice] Server built: Nov 11 2009 14:29:03
[crit] (22)Invalid argument: Parent: Failed to create the child process.
[crit] (OS 6)De ingang is ongeldig. : master_main: create child process failed. Exiting.
[notice] Parent: Child process exited successfully.

[JonB]

A. - What version of XAMPP?

B. - What version of Windows?

C. - Was the Apache server working correctly before you had this error?

Good Luck