So looking at the log previously it seemed to pick up peers ok, with the instance above it did 101,102,103,104 and moved on. As far as I can remember. And, it seemed to occasionally pick up a new peer now and then.
I didn't see any specific peer rejection, but it may have been there. The log is overwritten with reindexing at the moment so I can't check. I tried the shortcut method to reindex; adding ' -reindex' to the Target field of my desktop bitcoin core shortcut's properties. Then double clicked.
I hope this is all that's wrong. I am starting to lose faith in my node I am getting 'ERROR: AcceptBlock: bad-witness-nonce-size, ContextualCheckBlock: invalid witness reserved value size'
Early on in the chain, for maybe 50 different blocks ( around 900 to 1100) but then it moves on ok and gets new tips. And haven't had errors since. And weirdly I have had numerous confirmed transactions well beyond those early blocks, through armory, with this node. So hopefully those errors are negligible...
Additionally the headers sync stops at the same block that is corrupted, 8600036. The reindexing continues with the blocks. I will let the reindex do it's thing maybe it will automatically re-sync beyond that block as you say, or I guess I will have to delete blocks beyond the "blk04580.dat". And then the node will have to download from there...
Please let me know if I should move this reindexing to another question stream, or bitcoin core form perhaps. However, the orphan chain maybe be involved at this specific position also.
2026-06-25T03:54:12Z [0%]...ERROR: ReadBlockFromDisk: Errors in block header at FlatFilePos(nFile=4580, nPos=81813786)
2026-06-25T05:52:00Z ERROR: VerifyDB(): *** ReadBlockFromDisk failed at 860036, hash=000000000000000000002d7250815b8d194c6f4574bde61a0564607f61c621eb
The hash and the message in the next line are concerning though.
It indicates that it may just be a case of "
stuck in a fork" issue which can be solved by
reconsiderblock command.
It's apparent if you see a lot of peers getting banned by your node.
Is this a major concern? Or would the reindexing possibly fix that loop. Not that I has seen peers getting banned.
Thank you both for your time, patience, and advice. I know this wears me out.