“unknown guidelines (versionbit 2) have been activated”
Which means that you’re in all probability utilizing an outdated model of Bitcoin Core that does not perceive new varieties of Bitcoin transaction. The present model is 0.21.1.
It nearly definitely has nothing to do with the second a part of your query.
Putting in a brand new model of Bitcoin Core from the real web site ought to make the message go away. It will not get your a reimbursement although.
Bitcoin Core made a transaction by itself
When you did not make the transaction, both another person has entry to your pockets or to a replica of your pockets (that’s, they’ve had some form of entry to the non-public keys within the pockets). It’s doable your pc has malicious software program on it that you simply have been tricked into putting in.
Do not obtain software program from trickster web sites that use variations of the identify comparable to “BTC Core”. Mistakenly putting in malicious software program is a technique of getting cash stolen. I word that there’s a website whose URL spells bitcoincore with an accented ń – I can solely assume it’s a pretend web site offering maliciously altered software program that steals cash. That malicious imposter web site appears to have presently purchased its solution to the highest of the Google outcomes (it is an “Advert” outcome). bitcoincore.org is OK, bitcoińcore.org is pretend.
and despatched all my bitcoins from pockets to deal with I do not recognise.
That appears like theft.
Can I do one thing with this concern and get my bitcoins again?
You’ll be able to’t cancel, undo or reverse a confirmed transaction. Solely the individual or enterprise who controls the receiving handle can create a brand new transaction sending the identical quantity to you. It’s doable the cash has been moved additional.
Beware of faux restoration brokers. You might be more likely to be tricked out of additional cash than to any see any important quantity of stolen cash returned to you.
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