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mode for more information about program component updates.

4.5.1.2.4.2 Troubleshooting Mirror update problems

In most cases, problems during an update from a Mirror server are caused by one or more of the following: incorrect

specification of the Mirror folder options, incorrect authentication data to the Mirror folder, incorrect configuration on

local workstations attempting to download update files from the Mirror, or by a combination of the reasons above.

Below is an overview of the most frequent problems which may occur during an update from the Mirror:

ESET Endpoint Security reports an error connecting to Mirror server – Likely caused by incorrect specification of the

update server (network path to the Mirror folder) from which local workstations download updates. To verify the

folder, click the Windows Start menu, click Run, enter the folder name and click OK. The contents of the folder should

be displayed.

ESET Endpoint Security requires a username and password – Likely caused by incorrect authentication data

(username and password) in the update section. The username and password are used to grant access to the update

server, from which the program will update itself. Make sure that the authentication data is correct and entered in the

correct format. For example, Domain/Username, or Workgroup/Username, plus the corresponding Passwords. If the

Mirror server is accessible to “Everyone”, please be aware that this does not mean that any user is granted access.

“Everyone” does not mean any unauthorized user, it just means that the folder is accessible for all domain users. As a

result, if the folder is accessible to “Everyone”, a domain username and password will still need to be entered in the

update setup section.

ESET Endpoint Security reports an error connecting to the Mirror server – Communication on the port defined for

accessing the HTTP version of the Mirror is blocked.

4.5.1.3 Update rollback

If you suspect that a new update of the virus database may be unstable or corrupt, you can roll back to the previous

version and disable any updates for a chosen period of time. Alternatively, you can enable previously disabled updates.

ESET Endpoint Security provides modules backup and restore (so-called rollback) of the virus database. 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 in the local computer

file system.

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 if you wish to manually allow regular updates. Because it represents a potential security risk, we

do not recommend selecting this option.

If a rollback is enabled, the Roll back button turns to Allow updates. No updates will be allowed for the time interval

selected from the Time interval 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

for a longer time. If you have entered 2 (two) into the Number of locally stored snapshots field and click Roll back,

the virus signature database 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 Endpoint Security in

the Update section.

Configuration options for the local Mirror server are accessible after adding a valid license key in the license manager,

located in the ESET Endpoint Security Advanced setup section. If you use your workstation as a mirror, update copies

must have accepted the most recent End-User License Agreement (EULA) before they are created as copies update files

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