(WHM >> Home >> Server Configuration >> Update Preferences)


This interface allows you to define how your server performs software updates and upgrades.

cPanel & WHM installs the at daemon (atd) during the update process. This daemon validates the system's health after each update. If the update analysis process encounters any errors, the at daemon emails a report to your contact email address.

cPanel & WHM Updates

This section of the interface allows you to select a release tier. The release tier that you select controls when the system performs an upgrade to a new major version of cPanel & WHM.

Additionally, this interface allows you to specify how your server performs an update within a major version.

If you perform an update that includes multiple major versions of cPanel & WHM, the update process upgrades your server to each intermediate version. The update process performs compatibility checks for each version prior to the upgrade to that version. If the process encounters blockers, it finishes on the most recent release of cPanel & WHM that is compatible with your system.

For more information, read our Upgrade Blockers documentation.

Release Tier

Select a cPanel & WHM tier that matches your requirements. For more information, read our cPanel & WHM Product Versions and the Release Process documentation.

After you upgrade to a new major version of cPanel & WHM, you cannot downgrade to a previous major version of cPanel & WHM.

  • For this reason, you cannot select a release tier that represents a downgrade.
  • The icon appears next to the description for tiers that represent a downgrade.

The following table describes each of the cPanel & WHM release tiers:

TierDescriptionPublication Frequency

Long-Term Support (LTS). If you do not wish to upgrade cPanel & WHM, you can select a cPanel & WHM version for as long as cPanel supports it.

The following table lists the LTS dates for the current versions of cPanel & WHM:

Not applicable.
STABLEThis version has received considerable public exposure, testing, and verification.Published least frequently.

This version is feature-complete and we tested it thoroughly. It contains all intended features and functionality. New installations default to RELEASE.

Published more frequently than STABLE.
CURRENTWe tested and verified this version, but it may not contain all of the proposed functionality of a release. This tier resembles the "release candidate" tier that other publication schemes use.Published more frequently than RELEASE.

We only perform rudimentary testing on this version. We may significantly modify these features in future releases. This version usually lacks official public documentation. 

Due to the dynamic nature of EDGE builds, only use EDGE to test for compatibility and functionality in a controlled environment. We do not recommend this tier for production servers.

Published most frequently (up to several times per week).

Automatic upgrades to new major versions

To reduce support ticket influx, automatic upgrades to subsequent major versions of cPanel & WHM do not always occur immediately. In certain scenarios, the system applies a zero-to-four-business-day delay before your automatic upgrade executes.

The system applies a delay if all of the following statements are true:

  1. You use the RELEASE or STABLE tier.
  2. You do not run the upgrade manually.
  3. Your current version is only one major version older than the target major version.
  4. You do not run the upgrade with the Force option.

The system randomly selects the length of your delay. For example, if the system detects a new major version on a Friday, the upgrade does not take place until the following Monday, Tuesday, Wednesday, or Thursday.

When we release a major version, you may perform any of the following actions:

Before an upgrade, ensure that the new version is compatible with any third-party software or customizations to your system. We recommend that you stage the upgrade on a test system before you upgrade your production system.

Daily Updates

Use this menu to select how you want cPanel & WHM to update. You can choose from the following options:

The maintenance portion of the /usr/local/cpanel/scripts/upcp script always runs as part of the nightly cron job, regardless of the update settings.

Staging Directory

The upgrade to newer versions of cPanel & WHM requires a minimum amount of disk space in order to stage the files necessary. This feature determines where the system places the staging files. 

If the selected directory does not have enough disk space for the update, the system automatically selects a different directory for the next attempt. An email will notify you of the new selection, and you will have 24 hours to change the new directory.

To select the staging directory for the updates, perform one of the following actions:

Operating System Package Updates

This feature determines whether the nightly maintenance tasks will update the RPM packages from your operating system distribution. This is similar to the yum update command. 

  • This setting does not impact cPanel-provided RPMs.
  • In cPanel & WHM version 68 and later, the /usr/local/cpanel/scripts/sysup script automatically updates the EasyApache 4 RPMs. This update occurs regardless of your local configuration. The following settings will not prevent an automatic update:
    • The RPMUP variable set to never in the /etc/cpupdate.conf file.
    • The Operating System Package set to Never Update in WHM's Update Preferences interface (WHM >> Home >> Server Configuration >> Update Preferences).

Apache SpamAssassin™ Rules Updates

This feature defines how you wish to update the Apache SpamAssassin rules.

  • When the cPanel update script (/usr/local/cpanel/scripts/upcp) runs, it updates Apache SpamAssassin through the Apache SpamAssassin update script (/usr/local/cpanel/scripts/sa-update_wrapper).
  • For more information about Apache SpamAssassin rules, read the Apache SpamAssassin documentation.

Send my settings to all configuration cluster servers

Select the Send my settings to all configuration cluster servers checkbox to send your Update Preferences settings to all of the servers that currently exist in your configuration cluster.

The interface only displays the Send my settings to all configuration cluster servers checkbox if you have already added additional servers to the configuration cluster with the Configuration Cluster interface (WHM >> Home >> Clusters >> Configuration Cluster).

If you selected this option, the interface may require several seconds to load when you click Save, and will then display a confirmation message: 

Additional documentation