Hi, First please find attached a simple patch that fixes a problem I encountered running ssh-host-config with the --debug option. Pretty simple. Without redirecting the output of csih_stacktrace() to stderr, then (3.5.4) Command Substitution of functions that call it will run into problems. And the one that I encountered was this one: cygwin-service-installation-helper.sh:1147:csih_mktemp () cygwin-service-installation-helper.sh:1148:{ cygwin-service-installation-helper.sh:1149: csih_stacktrace "${@}" cygwin-service-installation-helper.sh:1150: $_csih_trace cygwin-service-installation-helper.sh:1152: local __umask=$(umask) cygwin-service-installation-helper.sh:1153: local rval cygwin-service-installation-helper.sh:1154: local tmpdir cygwin-service-installation-helper.sh:1156: tmpdir=$(csih_writable_tmpdir) || return 1 cygwin-service-installation-helper.sh:1158: umask 0077 cygwin-service-installation-helper.sh:1159: /usr/bin/mktemp --tmpdir="${tmpdir}" "$@" tmpdir will be filled with stacktrace output from the csih_writable_tmpdir() call, and mktemp will fail. Further, there is definitely a bug, at least for me, with running ssh-host-config on Vista (32 bit, but that shouldn't matter) in a non-domain environment. The script obviously confuses the form of username construct to use at various points. I encounter the following error: *** Info: This script plans to use 'cyg_server'. *** Info: 'cyg_server' will only be used by registered services. no *** Query: Create new privileged user account 'LIBRA-VW\cyg_server' (Cygwin name: 'libra-vw+cyg_server')? (yes/no) yes *** Info: Please enter a password for new user libra-vw+cyg_server. Please be sure *** Info: that this password matches the password rules given on your system. *** Info: Entering no password will exit the configuration. *** Query: Please enter the password: *** Query: Reenter: *** Info: User 'libra-vw+cyg_server' has been created with password 'melum0m0'. *** Info: If you change the password, please remember also to change the *** Info: password for the installed services which use (or will soon use) *** Info: the 'libra-vw+cyg_server' account. passwd: unknown user libra-vw+cyg_server *** Warning: Setting password expiry for user 'libra-vw+cyg_server' failed! *** Warning: Please check that password never expires or set it to your needs. No user or group 'libra-vw+cyg_server' known. *** Warning: Assigning the appropriate privileges to user 'libra-vw+cyg_server' failed! *** ERROR: There was a serious problem creating a privileged user. yes *** Warning: Expected privileged user 'libra-vw+cyg_server' does not exist. *** Warning: Defaulting to 'SYSTEM' *** Info: The sshd service has been installed under the LocalSystem *** Info: account (also known as SYSTEM). To start the service now, call *** Info: `net start sshd' or `cygrunsrv -S sshd'. Otherwise, it *** Info: will start automatically after the next reboot. *** Warning: Host configuration exited with 1 errors or warnings! *** Warning: Make sure that all problems reported are fixed, *** Warning: then re-run ssh-host-config. And I'm sure the problem is that this well-intended change to the script fails on the assumption that LOGONSERVER is always populated. It isn't for me on Vista. cygwin-service-installation-helper.sh:2884: # This test succeeds on domain member machines only, not on DCs. cygwin-service-installation-helper.sh:2885: if [ "\\\\${COMPUTERNAME,,*}" != "${LOGONSERVER,,*}" \ cygwin-service-installation-helper.sh:2886: -a "${LOGONSERVER}" != "\\\\MicrosoftAccount" ] cygwin-service-installation-helper.sh:2887: then cygwin-service-installation-helper.sh:2888: # Lowercase of USERDOMAIN cygwin-service-installation-helper.sh:2889: csih_PRIVILEGED_USERNAME="${COMPUTERNAME,,*}+${username}" cygwin-service-installation-helper.sh:2890: fi cygwin-service-installation-helper.sh:2891: fi I fixed this by modifying the test to check LOGONSERVER is not empty: if [ -n "${LOGONSERVER}" -a "\\\\... Can this be fixed in the next release? -- Regards, Shaddy