Hi We have an Postgresql 8.2.5 installation on a Windows server 2003 that have worked perfectly for our Mediawiki until we tried to update to 8.4. Before the update we took a backup, stopped the service and took a copy of the entire database catalog. We could not make the 8.4 (installed in a different directory) work so we decided to go back to the initial installation which remained intact. Then when we try to start the service it fails and we get the message "could not open process token: error code 5" in the event viewer, nothing else. Now after googling for some hours and days I am stuck. the Postgres user are to start the service and so nothing is changed there either. Even though the database files were not changed, we have also copied the entire original database back. The installation has been done with the "postgresql-8.2-int.msi" package and it has been reapplied with the following command, "msiexec /i postgresql-8.2-int.msi REINSTALLMODE=vamus REINSTALL=ALL /" Still no progress. What to do? /Anders -- View this message in context: http://www.nabble.com/could-not-open-process-token%3A-error-code-5-tp25891332p25891332.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general