Article ID: 6002, created on Feb 2, 2009, last review on May 11, 2014

  • Applies to:
  • Plesk for Linux/Unix
  • Plesk Expand 2.x


I get the following error when reload Plesk domains through {Expand -> Plesk Servers -> mark Plesk server -> Reload -> Domains -> OK}

[Transport] Temporary error occurred while processing request. Plesk server is unreachable now: (52) Empty reply from server


[Transport] Temporary error occurred while processing request. Plesk server is unreachable now: (28) Operation timed out with 0 out of -1 bytes received


[Transport] PleskAgent answer validation failed.
Invalid reply from Plesk server #1 ( The message does not conform to protocol version. Make sure your Plesk and Plesk Expand
servers have all available patches and hotfixes applied, if that does not help, then report a problem to Parallels. XML validation error: Error at
file 'xmlPacket', line 1, column 7: Unknown element 'br'.


Reloading of Plesk domains is memory and time consuming procedure. It may fail due to timeout or memory limit exceeding errors.

Before start reloading it is recommended to change Expand configuration file: increase operation_timeout and decrease number of clients max_operated_clients and domains max_operated_domains that are processed in one packet.

################### Plesk Servers Management Settings
# Plesk server operation timeout in seconds
operation_timeout = 7200
# Maximum number of operated clients in one packet
max_operated_clients = 5
# Maximum number of operated domains in one packet
max_operated_domains = 5

Restart Expand application after the reconfiguration:

~# /etc/init.d/expandom restart
~# /etc/init.d/expandtm restart

Also reconfigure Parallels Plesk Panel, increase Plesk Apache Timeout, and max_execution_time, memory_limit in Plesk PHP configuration:

# Timeout: The number of seconds before receives and sends time out.
Timeout 7200

max_execution_time = 7200    ; Maximum execution time of each script, in seconds
memory_limit = 128M      ; Maximum amount of memory a script may consume (64MB)

Restart Parallels Plesk Panel after the reconfiguration:

~# /etc/init.d/psa restrat1

29d1e90fd304f01e6420fbe60f66f838 a914db3fdc7a53ddcfd1b2db8f5a1b9c 0316bb680a7c882e8693bf1bcd23642b 8760abb54be64bdc3c8805b6572624e8 56797cefb1efc9130f7c48a7d1db0f0c

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