Release Notes for Parallels Plesk Panel 9.5.5 for Microsoft Windows Systems


  1. Introduction

  2. What's New
    1. Parallels Plesk Panel 9.5.5
    2. Parallels Plesk Panel 9.5.4
    3. Parallels Plesk Panel 9.5.3
    4. Parallels Plesk Panel 9.5.2
    5. Parallels Plesk Panel 9.5.1
    6. Parallels Plesk Panel 9.5.0
    7. Parallels Plesk Panel 9.2.3
    8. Parallels Plesk Panel 9.2.1
  3. Software Requirements and Prerequisites
  4. Supplied Components
  5. Supported Third-Party Components
  6. Installation Instructions
  7. Upgrade Instructions
  8. Known Problems and Limitations
  9. Contact Information

1. Introduction

This file contains information that supplements the Parallels Plesk Panel documentation, such as requirements, information about new features, resolved bugs, and known problems. This file was updated with the latest information available at the time of release.

2. What's New


[+] new feature

[-] bug resolved

[*] bug resolved and functionality improved

Parallels Plesk Panel 9.5.5

  1. [+] Coldfusion 9 support is added.

  2. [+] PHP 4.4.9 is included now in Parallels Plesk Panel for Windows distribution.

  3. [+] MailEnable 5.10 is included now in Parallels Plesk Panel for Windows distribution.

  4. [+] MySQL 5.1.56 is included now in Parallels Plesk Panel for Windows distribution.

  5. [+] phpMyAdmin is included now in Parallels Plesk Panel for Windows distribution.

  6. [+] PHP 5.2.17 is included now in Parallels Plesk Panel for Windows distribution.

  7. [+] BIND 9.7.3 is included now in Parallels Plesk Panel for Windows distribution.

  8. [+] Kaspersky Antivirus 8 is included now in Parallels Plesk Panel for Windows distribution.

  9. [-] Issue resolved: Reconfigurator breaks site applications data in siteapppackages and apsapplicationitems tables.

  10. [-] Issue resolved: MSSQL user cannot access the database after migration.

  11. [-] Issue resolved: Sometimes BIND cannot be set when creating a domain .

  12. [-] Issue resolved: Attempt to change IP address type from exclusive to shared is ended with error: withftpmng --change-vhost-ip failed.

  13. [-] Issue resolved: Statistics for domain will not be calculated when "www" prefix for domain is enabled.

  14. [-] Issue resolved: AWstat statistics for domain is not calculated for some days.

  15. [-] Issue resolved: Only one last file are exists in log's folder after log rotation.

  16. [-] Issue resolved: SpamAssasin adds X-SpamAssassin headers to outgoing mail if spam checking is off.

  17. [-] Issue resolved: Reconfigurator fails on "Repair Plesk Installation -> Plesk Server Accounts" on Windows 2008.

  18. [-] Issue resolved: Notification of finished backup is sent several times.

  19. [-] Issue resolved: New domain is moved to default Plesk IIS application pool instead of application pool of client.

  20. [-] Issue resolved: Multiple Plesk XSS vulnerabilities have been fixed.

  21. [-] Issue resolved: Horde XSS vulnerability has been fixed.

Parallels Plesk Panel 9.5.4

  1. [-] Issue resolved: SpamAssassin training did not work.

  2. [-] Issue resolved: PopPassD lost connection to MySQL and needed a manual restart to resume it.

  3. [-] Issue resolved: PopPassD did not accept special characters in passwords.

Parallels Plesk Panel 9.5.3

  1. [+] Compatibility with Parallels Virtuozzo Containers 4.6.

  2. [+] Compatibility with ASP.NET 4.

  3. [+] Improved performance of IIS 7 — physical hosting operations performance is now increased.

  4. [+] MailEnable 4 as a default Mail Server — MailEnable 4 is now included in Parallels Plesk Panel for Windows distribution.

  5. [+] SmarterMail 6 and BIND 9.7.1-P2 — the newer versions of the third-party components are supplied.

  6. [*] Google Services for Websites localization - now Google Services for Websites can be used in the same language as your current Parallels Plesk Panel locale.

  7. [*] Possibility to change the default temporary directory used during backup and migration was added. For details, refer to Parallels Plesk Panel 9.5:: Backup and Restore Utilities Administrator Guide and Parallels Plesk Panel 9.5: Migration Guide

  8. [*] Possibility to keep all log files (HTTP, FTP, mail) for all domains on the server was added.

  9. [-] Virtuozzo promotion in the top frame of Parallels Plesk Panel is removed.

  10. [-] Serv-U statistics utility fails bug is fixed.

  11. [-] Mail content of suspended domains is not backed up bug is fixed.

  12. [-] Impossible to switch the Parallels Plesk Panel DNS server to MS DNS when .NET 4 is installed on the server bug is fixed.

  13. [-] Slow domain creation on IIS 7 bug is fixed.

  14. [-] Domains that exceeded limits are not suspended on a server with a lot of domains bug is fixed.

  15. [-] Incorrect link to SmarterMail download on the administrator's home page bug is fixed.

  16. [-] Some countries are not listed at the Add SSL Certificate page, so customers cannot generate a CSR bug is fixed.

  17. [-] Autoresponders stop working on MailEnable mail server, only restart of mail services helps bug is fixed.

Parallels Plesk Panel 9.5.2

  1. [+] Microsoft DNS Server 6.0 is now fully supported.

  2. [-] On Windows Server 2008, PHP handler for a virtual directory is automatically set to CGI even if PHP is set to run as FastCGI module on the domain level bug is fixed.

  3. [-] PHP handler is changed from FastCGI to CGI automatically upon any actions with Web Directories in Plesk bug is fixed.

  4. [-] Migration Manager reports that dump validation failed due to invalid value of the "enabled" attribute of mail redirects for some mail accounts where mail redirection is set up but disabled bug is fixed.

Parallels Plesk Panel 9.5.1

  1. [+] SpamAssassin 3.3.1 support — now the Panel distribution includes the latest version of the SpamAssassin anti-spam solution.

  2. [+] Support for new hypervizor virtualization solutions: the Panel operates in environments created with KVM and Parallels Server 4 Bare Metal.

  3. [-] The Panel claims that backing up failed when it actually succeeded, if a language other than English (United States) is installed bug is fixed.

  4. [-] The A resource record in DNS zone of a domain with physical hosting always points at the IP address on which the domain is hosted, even if an IP address is explicitly set in DNS zone template bug is fixed.

  5. [-] After upgrade to Plesk 9, domain templates with Web statistics set to be available via password-protected directory are not restored bug is fixed.

  6. [-] Plesk 9 does not restore backup of domain that originates from Plesk 8 if the domain administrator permissions were modified bug is fixed.

Parallels Plesk Panel 9.5.0

  1. [+] Free migration, installation and upgrade assistance — to help our customers start using Parallels Plesk Panel 9.5, Parallels provides free support for migration, installation and upgrade of the Panel.

    NOTE: Providing free assistance changes licensing options for the Parallels Plesk Panel, so it is required that you obtain a new license for the version 9.5 in the Parallels Online Store located at

  2. [+] PCI Compliance — Parallels Plesk Panel can be made compliant with the Payment Card Industry Data Security Standard. This can be achieved by running a special PCI compliance resolver utility and additional tuning of system components, as described in the document Achieving PCI Compliance for Servers Managed by Parallels Plesk Panel 9.5. The document is available at

  3. [+] Compatibility with Microsoft Internet Explorer 8 — Parallels Plesk Panel is now compatible with Microsoft Internet Explorer 8.

  4. [+] Google Services for Websites support (beta) — Parallels Plesk Panel 9.5 can now be integrated with Google Services for Websites. To learn more, refer to Parallels Plesk Panel 9.5 Administrator's Guide at

    IMPORTANT: Currently, this functionality is provided in the Beta state for testing purposes only. Do not try using in a production environment.

  5. [+] More virtualization solutions supported: Parallels Plesk Panel 9.5 can operate in virtual environments created by the following virtualization solutions: Parallels Virtuozzo Containers, Microsoft Hyper-V, Xen, and VMWare. There are special licensing options for Parallels Panel software operating inside virtual environments. For more information about licensing options, contact your vendor or call Parallels sales team. The phone numbers are listed at

  6. [+] Upgraded components: phpMyAdmin was upgraded to the version 2.9.11, IceWarp (Merak) Mail Server to the version 10.0, Bind DNS server to the version 9.4.3-P4, PHP to the version 5.2.13, and Horde Application Framework to the version 3.3.6.

  7. [+] Dr. Web antivirus component goes under the name Parallels Premium Anitivirus.

  8. [+] Backup utility enhancement — It is now possible to specify an arbitrary temporary folder as a command-line parameter.

  9. [*] Operation of Plesksrv.exe component was stabilized.

  10. [-] An unauthenticated remote attacker being able to compromise the system and gain control over it security issues were resolved.

  11. [-] Standard Parallels Plesk Panel configuration allowed to view extra information (read webmail folder) issue is resolved.

  12. [-] Cross-site scripting vulnerability was eliminated.

  13. [-] If temporary directory on the server was full, FTP network error occurred on attempt to move a file from an FTP storage to the server repository issue is resolved.

  14. [-] Migration failed if the /tmp file system was full issue is resolved. Now you can specify any other location for the temporary directory.

  15. [-] Parallels Plesk Panel hanged on attempt to remove domains with several mailboxes issue is resolved.

  16. [-] Parallels Plesk Panel failed to install the DotNetNuke application on websites issue is resolved.

  17. [-] SpamAssassin spam filter incorrectly classified most of the messages delivered in the year 2010 as spam issue is resolved.

  18. [-] Horde webmail did not open properly in Internet Explorer 8 issue is resolved.

Parallels Plesk Panel 9.3.0

  1. [+] Windows Server 2008 R2 support is added.

  2. [+] MailEnable Standard 4.16 support is added.

  3. [-] Certificates from repository of domain set on exclusive IP address are reset when domain backup is restored bug is fixed.

  4. [-] The "Applications" link appearing in the left frame for domain administrator's main menu when applications management is not supported by license bug is fixed.

  5. [-] Panel freezing because of Web application installation under Windows 2008 bug is fixed.

  6. [-] In-place migration from IIS 6 to Parallels Plesk Panel hangs bug is fixed.

Parallels Plesk Panel 9.2.3

  1. [+] Microsoft SQL Server 2008 Express Edition — Parallels Plesk Panel 9.2.3 for Windows is shipped with the new version of Microsoft SQL Server 2008 Express Edition.

  2. [-] CPU usage numbers shown as negative on System Statistics page bug is fixed.

  3. [-] Inability to switch the default interface language to another language if Parallels Plesk Panel license key allows no additional languages bug is fixed.

  4. [-] No logs created by the database upgrade procedure bug is fixed.

  5. [-] Plesk Management Service (plesksrv.exe) crashing when attempting to access a site directory protected with password bug is fixed.

  6. [-]Stability of Plesk Management Service (plesksrv.exe) on Windows Server 2008 is increased with the service auto-recovery function (auto-restart in 1 minute).

Parallels Plesk Panel 9.2.1

  1. [+] Migration Manager — New Migration Manager feature allows you to transfer data from other Parallels Plesk Panel installations.

  2. [-] Mailbox quota set incorrectly via API-RPC bug is fixed.

  3. [-] Backup timing out when large backup file is being uploaded to FTP bug is fixed.

  4. [-] Mailbox not accessible through POP3 on some mail servers after new password was set for the mail account bug is fixed.

  5. [-] Inability to properly back up IDN domains that contain autoresponder attachments bug is fixed.

  6. [-] Backup failing with errors related to 'php_isapi' parameter in domain template bug is fixed.

  7. [-] Incorrect backup file size reported (much bigger than the actual file size) bug is fixed.

  8. [-] Backup failing with the error "Could not parse status disabled by value '32'" bug is fixed.

  9. [-] Backup file content not being properly restored due to incorrectly applied restore conflicts resolution policy bug is fixed.

  10. [-] Client-related information not shown in custom button's query string even when it is required bug is fixed.

  11. [-] Red color of traffic indicator on a domain bug is fixed.

  12. [-] Inability to retrieve ASP.NET settings for IDN domains bug is fixed.

  13. [-] Database users not being restored properly during the restoration of a domain that is already present in the system bug is fixed.

  14. [-] Missing link to the description of event handler variables in documentation bug is fixed.

  15. [-] Errors in unattended installation script provided in the Installation Guide were corrected.

  16. [-] 'Number of entries per page' option not working in the list of virtual directories bug is fixed.

  17. [-] Backup Manager incorrectly reporting warnings as errors when used via CLI bug is fixed.

  18. [-] Inability to backup domains that use SmarterStats or Urchin bug is fixed.

  19. [-] Inability to remove exclusive IP addresses from client and reseller template IP pools, where these IPs are still displayed as shared bug is fixed.

  20. [-] Inability to make an application from the Application Vault available to all users bug is fixed.

  21. [-] Windows server Temp folder not cleared after a successful backup to a remote FTP server bug is fixed.

  22. [-] Overuse policy cannot be changed if limits are already exceeded bug is fixed.

  23. [-] Updating Parallels Plesk Panel license key via GUI hangs Parallels Plesk Panel under some circumstances bug is fixed.

  24. [-] Backed up content of web users' websites is corrupted when backup file is converted to Parallels Plesk Panel 9 compatible format bug is fixed.

  25. [-] Incorrect placement of several mail-related messages in migration.result log file bug is fixed.

  26. [*] Mail accounts backup speed improvement — Mail accounts are backed up much faster now.

  27. [*] Web applications are installed much faster on Windows Server 2008.

  28. [*] DNS Settings for a domain on domain Home page — DNS Settings button for a domain is now located on domain's Home page.

  29. [*] Configuring Parallels Plesk Panel to work behind NAT — Instructions for configuring Parallels Plesk Panel to work behind routers and NAT were added to Administrator's Guide.

  30. [*] Bugfixes and improvements — A number of issues reported by customers were fixed, multiple other bugfixes and improvements were made.

3. Software Requirements and Prerequisites

Parallels Plesk Panel 9.5.5 for Windows requires one of the following operating systems installed on the server:

Before installing Parallels Plesk Panel for Windows systems, make sure that a static IP address is assigned to the server.

Parallels Plesk Panel for Windows can be installed only on NTFS partitions.

In order for your server to support ASP.NET 1.1, FrontPage 2002 Server Extensions, Miva, File Transfer Protocol (FTP) Service, Server Side Includes (SSI), and Active Server Pages (ASP), you need to install these components manually.

In order for your server to support domain performance configuring, you need to enable the QoS Packet Scheduler service.

If you plan to use MS SQL Server support in Parallels Plesk Panel for Windows, the MS SQL Server should be installed and configured to use standard or mixed security mode. If MS SQL Server is not installed, you can select Microsoft SQL Server to be installed with Parallels Plesk Panel for Windows and configured with administrator name 'sa' and random password.

Internet Information Services (IIS) should be preinstalled with World Wide Web (WWW) Service support.

IMPORTANT: We strongly recommend that you install Parallels Plesk Panel for Windows on a clean server; specifically, only above-mentioned operating system components should be installed.

4. Supplied Components

Parallels Plesk Panel 9.5.5 for Windows distribution package includes the following components:

5. Supported Third-Party Components

Mail servers:

  1. MailEnable Standard v.1.986–5.10
    Please refer to for clarifications.
  2. MailEnable Professional 3.52–5.10
  3. MailEnable Enterprise 3.52–5.10
  4. IceWarp (Merak) Mail Server 10.0
  5. SmarterMail 5.5
  6. SmarterMail 6
  7. MDaemon 9.6.5
  8. hMailServer 4.4.1
  9. CommuniGate Pro 5.2.6


  1. Kaspersky AV 8
  2. ClamWin 0.93
  3. Merak Antivirus

DNS servers:

  1. Microsoft DNS 6.0
  2. Microsoft DNS 5.2
  3. BIND DNS Server 9.7.3
  4. SimpleDNS Plus 5.1

FTP servers:

  1. Microsoft FTP 6.0
  2. Microsoft FTP 7.0
  3. Gene6 FTP Server 3.10
  4. Serv-U FTP Server 6.4

Web statistics:

  1. Webalizer V2.01-10-RB02
  2. AWStats 6.6
  3. SmarterStats 3.3
  4. Urchin 5.7

Web scripting:

  1. ASP 6.0.3790.0
  2. ASP.NET 1.1.4322
  3. ASP.NET 2.0.50727 (.Net Framework 2.0/3.0/3.5)
  4. ASP.NET 4.0
  5. Miva Empresa 5.0.6
  6. Perl 5.8.8
  7. PHP 4.4.9
  8. PHP 5.2.17
  9. Python
  10. SSI 6.0.3790.0
  11. Apache Tomcat 5.5.4
  12. ColdFusion 5.0
  13. ColdFusion MX 6.1
  14. ColdFusion MX 7.0
  15. ColdFusion 8.0 x86
  16. ColdFusion 9.0 x86
  17. ColdFusion 9.0 x64
  18. Microsoft FrontPage

Web-based administration tools:

  1. phpMyAdmin
  2. ASP.NET Enterprise Manager 0.1.3
  3. myLittleAdmin 2000 2.7.r126, 2005 3.2

Database servers:

  1. Microsoft SQL Server 2000
  2. Microsoft SQL Server 2005
  3. Microsoft SQL Server 2008
  4. MySQL 5.1.56

Webmail solutions:

  1. Horde IMP H3 (4.3.6)
  2. Atmail Webmail 5.5
  3. MailEnable Web Client
  4. IceWarp Webmail
  5. SmarterMail Web Client
  6. CommuniGate Pro Web Client

Spam filtering tools:

  1. SpamAssassin 3.3.1
  2. Merak Spamfilter
  3. SmarterMail Spamfilter


  1. stunnel 4.07

6. Installation Instructions

We strongly recommend that you refer to the product installation instructions prior to upgrading/installing and operating Parallels Plesk Panel. The installation guide for Parallels Plesk Panel can be accessed at, along with the rest of the user documentation. Parallels Plesk Panel Knowledge Base can be accessed at

Before starting installation, back up any valuable data on the server.

To install the Parallels Plesk Panel software on the server:

  1. Log in as "Administrator" or another user with Administrator's privileges.
  2. Change your working directory to the directory where the Parallels Plesk Panel for Windows distribution resides.
  3. Run SetupPlesk.exe or plesk_9.5.4_buildYYMMDD.HH.exe (where YYMMDD.HH is the actual build date).
  4. Follow the on-screen instructions.
  5. In some cases, when the installation is finished, you will be prompted to confirm restart of the operating system. After the restart, Parallels Plesk Panel will be started automatically.

In order to finish the initial configuration of Parallels Plesk Panel, you need to log in to Parallels Plesk Panel on your server at or https://IP-address:8443/

The default username is "admin" and the default password is "setup". The password is case-sensitive. For security reasons, you must set a new password upon initial login.

You also need to obtain and install a license key suitable for Parallels Plesk Panel 9.5.

7. Upgrade Instructions

IMPORTANT: Make sure you upgrade all installed components when upgrading to a newer version of Parallels Plesk Panel. This is required to avoid conflicts caused by outdated components.

IMPORTANT: If you are upgrading Parallels Plesk Panel on an intensively used hardware node, it is strongly recommended to use the following PVC parameters for the upgrade:

vprvmem (virtual memory) - 700
numproc (number of processes) - 100

After the upgrade is finished, these parameters should be set to their previously used values.

If you have Plesk version earlier than 8.1.x installed, then you need to upgrade it to Plesk 7.6.1 first, migrating all data, upgrade it to Plesk 8.1, and then run the Parallels Plesk Panel 9.5.4 installer. Refer to Plesk 8.1 Release Notes for additional information if you want to upgrade your Sitebuilder shipped with Plesk 7.6.1.

If your machine has Plesk 8.1.x, 8.2.x, 8.3.x, 8.4.x or 8.6.x installed, you will be prompted to upgrade the existing Plesk installation to Parallels Plesk Panel 9.5.4 after running the installer.

Parallels Plesk Panel 9.5.4 for Windows includes Sitebuilder 4.5 in the distribution package, but your Sitebuilder 2.x or 3.x installation will not be upgraded automatically. If you want to upgrade your Sitebuilder version during installation of Parallels Plesk Panel, run the installer executable with the following option: WSB_UPGRADE=force

If you used Sitebuilder 2.0.5 with earlier versions of Plesk, you can migrate websites created in Sitebuilder 2.0.5 to Sitebuilder 4.5 after you upgrade your Plesk software to Parallels Plesk Panel 9.5.4.

To successfully migrate websites created in Sitebuilder 2.0.5 to Sitebuilder 4.5:

  1. Install Sitebuilder 4.5:
  2. Run the sitebuilder.exe utility, located in the folder where Parallels Plesk Panel is installed, with the following parameters:

8. Known Problems and Limitations

9. Contact Information

Parallels Holdings, Ltd.
c/o Parallels International GMbH.
Parallels International GmbH
Vordergasse 49
CH8200 Schaffhausen
Phone: +41-526-722-030. Fax: +41-526-722-010


For billing information, send e-mail to
For purchasing information, contact sales representative in your country. The contact information is available at
For technical support, use our Online Support Form.
To report problems with Parallels Panel software, send e-mail to
For information on career opportunities with Parallels, send e-mail to
For press contact information, send e-mail to
For information about becoming a partner, send e-mail to
For information on translating Parallels Panel into your language, send e-mail to
For general product information, send e-mail to

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This product is protected by United States and international copyright laws. The product’s underlying technology, patents, and trademarks are listed at

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