User guide

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4.3.1.3 Update rollback
If you suspect that a new update of the virus database and/or program modules may be unstable or corrupt, you can
roll back to the previous version and disable updates for a set period of time. Alternatively, you can enable previously
disabled updates if you had postponed them indefinitely.
ESET NOD32 Antivirus records snapshots of virus signature database and program modules for use with the rollback
feature. In order to create virus database snapshots, leave the Create snapshots of update files checkbox selected.
The Number of locally stored snapshots field defines the number of previous virus database snapshots stored.
If you click Roll back (Advanced setup (F5) > Update > Advanced), you have to select a time interval from the Suspend
updates drop-down menu that represents the period of time that the virus signature database and program module
updates will be paused.
Select Until revoked to postpone regular updates indefinitely until you restore update functionality manually. Because
it represents a potential security risk, we do not recommend selecting this option.
If a rollback is performed, the Roll back button turns to Allow updates. No updates will be allowed for the time
interval selected from the Suspend updates drop-down menu. The virus signature database version is downgraded to
the oldest available and stored as a snapshot in the local computer file system.
Example: Let the number 6871 be the most recent version of virus signature database. 6870 and 6868 are stored as a
virus signature database snapshots. Note that 6869 is not available because, for example, the computer was turned off
and a more recent update was made available before 6869 was downloaded. If the Number of locally stored
snapshots field is set to 2 and you click Roll back, the virus signature database (including program modules) will be
restored to version number 6868. This process may take some time. Check whether the virus signature database
version has downgraded from the main program window of ESET NOD32 Antivirus in the Update section.