Resolution

Virtuozzo and Microsoft Windows work in conjunction making it critical to synchronize and update the two software packages appropriately. A special mechanism, vzup2date, was introduced to help with update management and to ensure Microsoft updates to be installed safely.

Virtuozzo configures Windows Automatic Updates on the Virtuozzo Host server so that only Microsot updates tested for compatibility with the current Virtuozzo patch level are installed.

Most Microsoft updates become available after a short delay for compatibility testing. Microsoft updates which are not compatible with Virtuozzo are postponed until the corresponding Virtuozzo hotfix is created and uploaded to Virtuozzo update server. Virtuozzo hotfixes for Microsoft updates compatibility are a critical priority for Virtuozzo and are supported very quickly.

Checks for Virtuozzo hotfixes are performed automatically and by default a notification is shown in the system tray if new updates are available. Once you run Virtuozzo Update Wizard (Start, Programs, SWsoft,  Virtuozzo, Virtuozzo Update Wizard) and install the corresponding Virtuozzo update, Microsoft updates will be installed using the Automatic Update Wizard.

It is necessary to have  an Internet connection, at least periodically, on a Virtuozzo server to keep Virtuozzo and Windows up-to-date.

Virtuozzo Update Wizard should be used to install Virtuozzo updates.

Microsoft Automatic Updates configured by Virtuozzo should be used to install Windows updates.

Please DO NOT install Microsoft updates using Internet Explorer! Doing so might load Microsoft patches that are not compatible with Virtuozzo and cause a service interruption.

Additional information

Correct installation sequence of Virtuozzo updates and MS Windows updates.

Here you can find the list of approved Microsoft updates.

To obtain and install Virtuozzo updates manually please see KB 1888.

If you would like to configure local WSUS service please see required settings.