Article ID: 114424, created on Jul 23, 2012, last review on May 11, 2014

  • Applies to:
  • Plesk 11.x for Linux
  • Plesk 10.x for Linux
  • Plesk 9.x for Linux/Unix
  • Plesk 8.x for Linux/Unix
  • Plesk 11.x for Windows
  • Plesk 10.x for Windows
  • Plesk 9.x for Windows
  • Plesk 8.x for Windows


When I try to upgrade my Parallels Plesk Panel (PP) from its web interface, it either keeps loading and nothing happens, or it is being very slow.


Most probably PP is facing issues with name resolving - connection to DNS server is slow or has been lost.

Note: If you are upgrading from a version 9.x or lower to a version 10.x or higher, the upgrade may take a considerable amount of time. This is due to major changes in business logic, user model and overall product functionality. On highly loaded environments the wait times may be more than a day.


Try configuring another name server that your PP server uses for resolving host names.
In Linux it can be done by adding a record to /etc/resolv.conf , for example add the following record without quotes and retry the upgrade:

bd7fc88cf1b01f097749ae6f87272128 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c 85a92ca67f2200d36506862eaa6ed6b8 c45acecf540ecd42a4bbfb242ce02b1d dd0611b6086474193d9bf78e2b293040 29d1e90fd304f01e6420fbe60f66f838 6ef0db7f1685482449634a455d77d3f4 b8ef5052d936e902043e41759118114e aac4a8fcd879de03758354e15495d69a c796c01d6951fa24ed54c7f1111667c6 0a53c5a9ca65a74d37ef5c5eaeb55d7f

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