In my full node, the milestoneIndex is up to date. However, the latestSolidSubtangleMilestoneIndex is stuck on a fix previous number. Is this correct? If not, what could be the reason for it and how to solve it?

  • If your neighbors are fully synced then you are probably facing one of the many instability issues of IRI :/
    – cmpn
    Commented Dec 4, 2017 at 16:37
  • They are synced. So I guess that's it. Commented Dec 7, 2017 at 5:59

2 Answers 2


It is a known bug in versions prior to It's definitely not correct.

This issue is fixed in version As stated in the release notes: https://github.com/iotaledger/iri/releases/tag/v1.4.1.6

  • fixes stale tcp connections
  • fixes solid milestone getting stuck (regression)
  • enables checking balance based on tips
  • enables API Rate limit for new transacitons
  • 1
    It would be great if you can quote the relevant part of the release notes in your answer.
    – Helmar
    Commented Jan 7, 2018 at 14:29

This is the basic answer for IRI synchronization issues:

  1. Make sure that your neighbor nodes are active and fully synchronized. If that's the case proceed with step two.

  2. Restart the node once with the parameter --revalidate. It will re validate your database without removing transactions and hopefully fix the issue.

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