Installed Bitcoin Core version 0.9.1 from bitcoin.org. Had run for about 18 hours, syncing to blockchain.
Suddenly, MS Security Essentials says: Category: Virus Description: This program is dangerous and replicates by infecting other files. Recommended action: Remove this software immediately. Items: file:C:\Users\user\AppData\Roaming\Bitcoin\chainstate\048850.sst
Can’t find anything on this, any suggestions?
Pedro
It’s a false positive, see #4069. The action of your virus protection software has destroyed your current chainstate database by removing a false “virus” (really one of the internal databases Bitcoin uses). You are in absolutely no danger, despite the ridiculous warning presented.
You will be prompted to rebuild your database on next launch, which will take some time. Before doing this you will need to whitelist the Bitcoin directory to prevent further damage. You won’t lose any of the contents of your wallet due to this, it’s just an annoyance. In future the files will probably be obfuscated as this going to be quite a widespread issue.
Just for interests sake, the “virus” is from 1991 and most certainly wouldn’t be of any danger to you even if you did manage to get a real copy of it from somewhere. Might corrupt your HD floppies or disable your COM ports, though I don’t think I’ve seen a computer with either of those for at least half a decade.
Hi and thanks for your attention to this, much appreciated.
Pedro
On Thu, Apr 24, 2014 at 4:11 PM, c64e5e9e-08ce-4f7d-be39-92cf89188b45 < notifications@github.com> wrote:
It’s a false positive, see #4069https://github.com/bitcoin/bitcoin/issues/4069. The action of your virus protection software has destroyed your current chainstate. You will be prompted to rebuild your database on next launch, which will take some time. You won’t lose any of the contents of your wallet due to this, it’s just an annoyance.
— Reply to this email directly or view it on GitHubhttps://github.com/bitcoin/bitcoin/issues/4086#issuecomment-41245732 .