Updating Plesk Version 7 or Earlier to Plesk 8.1

If you have Plesk version earlier than 7.5.x installed on your machine, you need to update it to Plesk 7.5.6+ first, migrating all data, and then run the Plesk 8.1 installer. Since the procedure of updating Plesk version 7 or earlier to Plesk 8.1 involves migration, it is performed only though GUI.

To update Plesk version 7 or earlier to Plesk 8.1:

1. Download Plesk 7.5.6+ for Windows installer of your choice (web installer or network installer)
2. Run the installer and follow the onscreen instructions.

   The following things should be taken in consideration when migrating data from Plesk 7 or earlier to Plesk 7.5.6+:

   • During the migration from Plesk 6.5 for Windows, problems with long user names can appear. Therefore, you must reduce the names of the following users down to 15 characters via the control panel: web users' names, FTP/FrontPage users' names, and subdomain users' names.
   • If you use the option of deleting of all your current data, only data in Plesk is deleted - sites in IIS are not deleted as a fallback measure in case something goes wrong. So, if you do not need them, you must delete them manually after installing Plesk.
   • There also can be issues with file locking during migration if you use some third-party components placed in Plesk installation folders. Therefore, uninstall all third-party software from Plesk folders before starting the migration. If you need these components, you will have to reinstall them after the migration.
   • If Plesk 7.0 for Windows was installed on Windows 2000 (which has IIS 5.0), but you installed Windows 2003 Server (having IIS 6.0) after that and now want to install Plesk 7.6 for Windows with migration, Plesk installer will not switch IIS 6.0 into the IIS 5.0 compatibility mode, which may cause some issues with sites functioning.
3. After you finish updating Plesk version 7 or earlier to Plesk 7.5.6+, download Plesk 8.1 for Windows installer of your choice (web installer or network installer) and update Plesk 7.5.6+ to Plesk 8.1.

For more information about updating Plesk version 7.5 and later to Plesk 8.1 through GUI, refer to the Updating Plesk Version 7.5 or Later to Plesk 8.1 Through GUI section.

For more information about updating Plesk version 7.5 and later to Plesk 8.1 through command line interface (CLI), refer to the Updating Plesk Version 7.5 or Later to Plesk 8.1 Through Command Line Interface section.