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Fix available for an issue with ESET Management Agent not connecting to the ESMC Server

ESET Customer Advisory 2018-0014
October 25, 2018
Severity: Information

Summary

Recently, an issue emerged that caused the ESMC Server to stop receiving connections from ESET Management Agent and thus no new data was delivered to the Server. The issue only occurred for a subset of users under specific conditions. While a temporary solution was to restart the Server, ESET has now prepared a permanent fix.

Details

The fix for the mentioned issue is in the form of a new library that needs to be replaced on the Server. We have also reached out to an affected customer and they have confirmed that after applying the fix, the issue ceased to appear.

In order to apply the fix, follow these steps according to your ESMC operating system:

Windows
  1. Download the AgentsStopConnectingFix.zip archive.
     
  2. Stop the ESMC Server service.
     
  3. Rename the following
    C:\Program Files\ESET\RemoteAdministrator\Server\NetworkGrpc.dll library to
    C:\Program Files\ESET\RemoteAdministrator\Server\NetworkGrpc-backup.dll
     
  4. Copy the .\x64\NetworkGrpc.dll or .\win32\NetworkGrpc.dll library from the downloaded archive to
    C:\Program Files\ESET\RemoteAdministrator\Server\
    (based on your system architecture).
     
  5. Start the ESMC Server service.
Linux
  1. Download the AgentsStopConnectingFixLinux.zip archive.
     
  2. Stop the ESMC Server service.
     
  3. Create a backup of ESMC Server directory (at least the file that will be replaced in the next step).
     
  4. Locate NetworkGrpc.so in your ESMC Server directory and replace it with the appropriate file from the downloaded archive (based on your system architecture).
     
  5. On SELinux-enabled systems, restore security contexts of the newly installed files using the following command:

    /sbin/restorecon -F -R -v /opt/eset/RemoteAdministrator/Server/
     
  6. Start the ESMC Server service.

If you were not directly affected by this issue, you do not need to replace the library. The fixed library will be included in future versions of ESET Security Management Center.

[UPDATE: ESMC 7.0.72 Service Release now contains the fixed libraries.]

Affected programs

  • ESET Security Management Center

Feedback & Support

If you have feedback or questions about this issue, please contact us using the ESET Security Forum, or via local ESET Support.

Version log

Version 1.2 (November 27, 2018): Added information on the released version containing the fix.

Version 1.1 (November 5, 2018): Linux instructions added

Version 1.0 (October 25, 2018): Initial version of this document



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