Due to urgent need property com.openexchange.sessiond.maxSessionPerClient is introduced in file sessiond.properties to specify the max. number of sessions allowed per client (Web UI, EAS, WebDAV, ...). By default that restriction is disabled (value set to zero).

# Specify the number of sessions allowed per client (Web UI, EAS, WebDAV, ...)
# A value equal to or less than zero means unlimited
com.openexchange.sessiond.maxSessionPerClient=0