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No peers / “no block source”

This runbook is for cases where Core shows 0 connections, no block source, or it never starts downloading headers/blocks.

Common cause: stale peers.dat (especially v4 installed over v3)

Admins repeatedly recommended:

  • Close Core
  • Delete (or rename) peers.dat
  • Reopen Core, allowing it to discover fresh peers again

TechAdept summarized this as a safe first-step when the wallet can’t find valid peers.12

For v4 specifically, obito noted that installing v4 over v3 can leave a v3-created peers.dat in place, causing v4 to connect to the wrong peer set. Deleting/renaming peers.dat forces v4 to rebuild it with v4 peers.34

Step-by-step

  1. Close ReddCoin Core.
  2. Go to the data directory (see Version compatibility).
  3. Backup wallet.dat (do not skip).
  4. Delete (or rename) peers.dat.
  5. Restart Core and wait a few minutes.

If it still doesn’t connect

  • Check firewall/security software (Windows Defender, third-party AV).
  • Review debug.log for connection errors.
  • TechAdept specifically suggested debug.log as the next diagnostic artifact.2

Fast-track tip (when peer count is low)

John Nash noted that peer discovery may “eventually” increase naturally, but you can fast-track by deleting peers.dat and restarting.5

Footnotes

  1. Telegram export (ReddCoinOfficial), 2023-05-24, Tech Adept (RDD) https://reddcoin.com / https://redd.love, message1908849. Note: Might be a firewall issue or something similarly network related. If you're technically savvy, shutting down the wallet software and deleting the "peers.dat" file (NOT t… Permalink: https://t.me/ReddcoinOfficial/1908849. ↩

  2. Telegram export (ReddCoinOfficial), 2023-05-24, Tech Adept (RDD) https://reddcoin.com / https://redd.love, message1908882. Note: If your issue is that the wallet doesn’t see any valid peers, and is reporting “no block source”, that’s something different than an issue with the blocks themselves. Di… Permalink: https://t.me/ReddcoinOfficial/1908882. ↩↩

  3. Telegram export (ReddCoinOfficial), 2024-09-18, obito, message2002895. Note: v4 wallet should connect only to v4 peers. I think you have this problem because if you installed v4 over v3, so you use the peers.dat file created by v3 in the data fol… Permalink: https://t.me/ReddcoinOfficial/2002895. ↩

  4. Telegram export (ReddCoinOfficial), 2025-01-10, obito, message2012462. Note: You don't need any addnode list. Remove the peers.dat file because it contains v3 peers and restart the wallet. The wallet will create a new file with v4 peers. Permalink: https://t.me/ReddcoinOfficial/2012462. ↩

  5. Telegram export (ReddCoinOfficial), 2025-02-18, John (cryptognasher) Nash, message2016709. Note: If the 2 connections are 4.22.9 eventually it will increase. The 4.22.9 peers will eventually announce their presence. However, if you want to fast track. Stop wallet, d… Permalink: https://t.me/ReddcoinOfficial/2016709. ↩