Hey everyone,
I’m running into this issue and could really use some help:
When I start my node with -maxreorg=204, it might fix it automatically. I’m getting this error: "A block chain reorganization has been detected that would roll back 194 blocks! This exceeds the max limit of 99 blocks, so the node is shutting down for safety reasons."
Is there a way to keep the node running or maybe bypass this error?
Or can I just change the maximum number of blocks allowed?
Any advice would be awesome.
Thanks a lot!
Blockchain Reorganization Error
2 replies 397 views
humbleledgerLegendary
Posts: 1027 · Reputation: 6554
#2Aug 24, 2025, 02:42 AM
What software are you using? My Bitcoin Core didn't roll back 194 blocks, so I'm pretty sure something's seriously wrong with your setup.
gr3g.0rbitHero Member
Posts: 1025 · Reputation: 2646
#3Aug 25, 2025, 04:15 AM
I also cannot find a reference to that message in the "Bitcoin" reference client repository or the GUI, "Bitcoin Core" repository in GitHub.
It's however available in "zcash" and "komodo" clients.
Are you using komodo node client?
If so, yes since it modifies the MAX_REORG_LENGTH which defaults to 99 blocks.
If others, check the client if it supports the arg, e.g.: zcash client doesn't have it.
References:
MAX_REORG_LENGTH: https://github.com/KomodoPlatform/komodo/blob/0adeeabdd484ef40539d1275c6a765f5c530ea79/src/main.h#L79-L80
-maxreorg arg: https://github.com/KomodoPlatform/komodo/blob/0adeeabdd484ef40539d1275c6a765f5c530ea79/src/komodo_utils.cpp#L1070
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