Questions tagged [synchronization]

The process of bringing a Monero client up to date with the blocks it is missing from the block chain.

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How to keep Monero daemon from crashing during initial sync?

I found that my Monero GUI wallet keeps crashing during the initial blockchain synchronization, and when I start off from where it crashed, data.mdb in C:\ProgramData\bitmonero\lmdb has been corrupted ...
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Still getting error when trying to sync Monero Desktop wallet

Error: “Daemon Failed to start Timed out, local node is not responding after 120 secs” when trying to sync GUI Monero wallet I'm trying to sync GUI version: 0.17.1.9 in Advanced mode (Local node) ...
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Daemon failed to start [duplicate]

I would be grateful for some help. I haven't logged into the Monero GUI for a while, and had to update and sync the blockchain. While syncing my computer crashed, and now when I try to sync I get the ...
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Error: “Daemon Failed to start Timed out, local node is not responding after 120 secs” when trying to sync GUI Monero wallet

I'm trying to sync GUI version: 0.17.1.8-8e6a2cde (Qt 5.9.9), Embedded Monero version: 0.17.1.8-release, in Advanced mode (Local node). These are the steps: Launch Monero Desktop app Put in 8 PIN to ...
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Problem: Daemon failed to start. Timed out, local node is not responding after 120 seconds

Unable to sync in the last week. Assume this could be network issues you are having. Please advise. GUI version 0.17.1.7 and Ledger nano s ver 1.6.1.
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Monerod constantly in sync by lagging behind 2 blocks

I have been running my own Monero Node (Monerod) for some weeks now and it worked perfectly. However, today my Node get stuck in the constant sync limbo at exactly 99.9%. It was always 2 blocks behind ...
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Restart sync if computer shuts down while downloading Blockchain

Sometimes my old computer freezes and has to be re-started. On a new installation, if I'm only partially done with sync, will I have to start all over or will it pick up where it left off?
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269 views

Coudn't connect to daemon

Wallet do not synchronizing because he couldn't connect to daemon. Win 10. Restore height is 2150000. I tried: Reinstall GUI (I had used latest version (17.4) before, but anyway) Start monerod Resync ...
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Connect GUI to remote node, wallet & daemon synchronized. Why don't this mean local blockchain is synched?

I keep having problem in getting local blockchain up to date to current height, including importing downloaded raw blockchain, each time it would get to a point where db gets corrupted & I have to ...
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Please help finding missing money

I was making an online purchase for a car part from overseas and the the seller wanted paid in Monero. I have used bitcoin in the past but have never used Monero. I had a few hundred dollars in ...
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Daemon not syncing on tails current release monero gui [duplicate]

monero seems to be not syncing on tails initial startup any ideas? [10/21/20 7:01 AM] 2020-10-21 I Monero 'Oxygen Orion' (v0.17.1.1-release) Height: 1, target: 1 (100%) Downloading at 0 kB/s Next ...
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Synchronizing and p2pstate.bin, GUI wallet

Hello I have 2 questions after recently downloading the monero blockchain to a whonix instance. I am using the GUI wallet. When I log into the wallet I get "Daemon is synchronized" but the ...
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How to recover a damaged blockchain? [duplicate]

Log: [P2P1] ERROR blockchain src/cryptonote_core/blockchain.cpp:4317 Error adding block with hash: <(hash)> to blockchain, what = Error adding spent key image to db transaction: ...
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Double spend error

I'm getting the error "transaction was rejected by daemon with status: failed. Reason: double spend" So a couple days ago I tried to send monero from gui wallet, I thought it went through ...
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441 views

Could not connect to daemon

I am a newbie and still trying to figure out what i am doing. For a couple of weeks now I've really been struggling to sync Daemom. The blocks are painfully slow. I'm setting up a local wallet, for ...
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Monero withdrawn from Kraken but not showing in my Ledger Nano S hardware wallet via Monero GUI wallet [duplicate]

On Thursday evening (BST) I withdrew some Monero from Kraken online exchange to the wallet address generated by setting up a Ledge Nano S Hardware wallet in the Monero Gui wallet (v0.16.0.2(Qt 5.12.2) ...
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How to increase monero node connectivity?

I have a server in Germany with a monero node running. 1) I want my node to be informed about the appearance of a new block as faster as possible. 2) I also want other nodes to be quickly informed ...
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112 views

Is there a secure way to boostrap a node?

It seems the sync process is tediously slow with it's verification. I do know of the bootstrap file, but I'm not sure how secure this is (How to synchronize the GUI wallet using the blockchain ...
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1answer
58 views

What is the limiting factor for synchronization speed?

I'm syncing a node right now from scratch. It seems to be going slower than I expected. CPU/Memory/IO/Network all do not seem fully utilized. What is the limiting factor here? My assumption is it ...
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1answer
65 views

How to keep lots of Monero wallets in sync?

I run a service that involves ~500 separate Monero wallets, since they all need unique private keys. To make wallet access faster, I keep the wallets in sync constantly with a simple Python script ...
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Can't start monero daemon under Ubuntu WSL “Attempt to get hash from 0 height failed”

I am using monero v15.0.2 gui version under windows 10 Ubuntu WSL. I am getting this error when starting up. It doesn't seem to be downloading the blockchain at all. How can this be resolved?
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Synchronizing GUI wallet issue

I just downloaded the new GUI and completed the download of the blockchain for a local node, but for some reason the wallet is not syncing and after I restart the daemon and GUI, both of them say "...
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“Waiting on daemon synchronization to finish” - still can't fix

first time user of Monero and to be honest, very unsophisticated user of crypto etc etc.... anyway... Issue: installed monero app on mac, setup app with remote node using Ledger nano S, open the ...
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113 views

RPC is node fully synced

In my test environment, which is ssh,bash and screen, I'm launching a monerod followed by several other programs wallet-rpc/cli and more, which are all depending on monerod. To prevent any confusion, ...
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monerod sync suddenly got slow, how to speed it up?

I've been running monerod 0.14.0.2, and it has been working well for several months. Today I noticed that it had fallen about 10,000 blocks behind. I killed it and restarted it, and called status ...
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106 views

How can I sync the blockchain from scratch, gently in the background?

I'm new to Monero, forgive me if this is a newbie question! I've tried to sync the blockchain from scratch twice now. Both times, it's slowed my computer to an absolute crawl and my computer was ...
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667 views

Daemon thinks it's connected but keeps saying “there were 0 blocks in the last 90 minutes…”

Alright, so I had been using the monero gui wallet for a couple weeks by running my own local node and everything was fine. Then one time when I opened the wallet for some reason it wouldn't connect ...
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264 views

Difference between Wallet Sync and Daemon Sync

What is the difference between Wallet Synchronization and Daemon Synchronization, in case of using either of local node or remote node?
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372 views

transfer fails with invalid output

I'm using the latest monero-wallet-cli version Monero 'Boron Butterfly' (v0.14.0.2-release) on linux. When I try to submit the transfer, it throws the following error: Error: transaction <txid> ...
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544 views

Daemon stopped syncing

I am using v0.14.0.2-release on Windows, and launching the monerod daemon with ./monerod.exe --block-sync-size=10 --data-dir=/f/.monero/ syncs correctly up to height 1788144. After that, the daemon ...
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540 views

Daemon sync questions

I've been letting the daemon sync for a while now, a few days actually, and it's at 80% and now going very slowly forward. About 20 blocks at a time. I understand why this happens, but this case seems ...
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70 views

Low security sync mode?

I'm wondering if anyone has thought about or implemented a low security sync mode? Presumably the client would only need to grab the TX hash, P and R values, and number of outputs, to be able to ...
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Monero GUI is unable to finish the synchronization

The Monero GUI (updated) suddenly stopped synching and stuck on the last 30 blocks or so. Here the log: https://paste.fedoraproject.org/paste/uguNJ3qVqHmdvFvpc-vyOQ What can I do to solve this ...
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120 views

Monerod and wallet fully synced, not recognizing transactions made before the fork as valid

Both wallet and CLI are showing the incorrect balance after many full blockchain rescans, trying with the CLI, same result, rescan from genesis block and arbitrary block numbers, same result. Full ...
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511 views

How synchronization with a remote node works?

I'm using a remote node, but it says disconnected so I clicked start Deamon and I'm waiting so much time for it to synchronize and it's filling my disk space ? I was thinking it do not fill disk ...
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1answer
141 views

Syncing stagenet daemon

I use Monero 'Lithium Luna' (v0.12.3.0-release) CLI only. I opened another thread that might or might not be related to this one. I have 3 stagenet daemons running (for testing purpose, not on the ...
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115 views

Daemon terminates when trying to load lmdb from new location

I'm a beginner to Monero. I managed to create a ledger wallet using the monero GUI and fully sync the daemon. I also succeeded in funding my wallet. When i later wanted to try the CLI version, i used ...
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1answer
155 views

monerod --test-drop-download vs --fast-block-sync

As per the help command --test-drop-download : For net tests: in download, discard ALL blocks instead checking/saving them (very fast) --fast-block-sync arg (=1) : Sync up most of the way by using ...
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74 views

Monero GUI isn't synchronizing

I open and connect to the daemon. The wallet says it's synched, but it's been two months since I've last opened the wallet. There's no way it is synching and I've sent a deposit that isn't showing ...
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2k views

Why the syncing of the wallet is very very slow?

I am new in Monero, I created a wallet address with Monero GUI, and someone transferred a little bit Monero to my address. However, I cannot see any transferred Monero in my wallet and the wallet just ...
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73 views

How can I set a wallet to use no-coinbase mode before syncing?

I am trying to configure a wallet to use refresh-type=no-coinbase. I am not entirely sure how to do this without waiting until it is done syncing. As soon as I open ./monero-wallet-cli, it asks me to ...
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Torsocks server failure when running monerod with Tor on Tails

I'm trying to run the Monero daemon (monerod) v. 0.12.2.0 with Tor on Tails 3.7.1. I'm doing exactly what is written here: Medium - Sheep’s Noob guide to Monero GUI in Tails 3.2. Basically: Download ...
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540 views

Monero GUI wallet stuck/increasing while syncing blockchain

Monero GUI wallet stuck/increasing while syncing blockchain I downloaded the Monero GUI wallet and have been attempting to sync the blockchain for a couple of days now. I left it overnight with about ...
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240 views

Explanation of the Monero Daemon running arguments

I started the monero daemon via the GUI on Mac OS X. I downloaded the binary unpacked from monero-gui-mac-x64-v0.12.0.0.tar.bz2. When I do a simple $ ps aux | grep monero from the command line I get ...
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monerod v0.12.0.0 can't synchronize

I'm on Version 0.12.0.0 2018-05-10 08:03:53.066 [P2P6] INFO global src/cryptonote_core/blockchain.cpp:1464 ###### REORGANIZE on height: 1568536 of 1568547 with cum_difficulty 14490123635886036 ...
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Have Windows 64, and Norton won't let me download Monero 12 [duplicate]

I am trying to download Monero v12 from Get Monero but my antivirus keeps blocking the file, and won't let me sync the blockchain. Do you know why this is happening, and should i be concerned for ...
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286 views

Recent Transaction Cannot Be Found [duplicate]

I recently sent Monero from my GUI wallet to an associates GUI wallet and the funds never arrived. I followed all the processes on your thread here: How do I, as a sender, verify that my transaction ...
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591 views

monerod block height is 1,500,000 - How do i pop off 100,000 blocks and start syncing at 1,400,000 instead?

What is the monerod command to pop off a certain amount of blocks? Say I am at block 1.5 million and I want to start from 1.4 million instead. What is the monerod command for this?
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228 views

Using old HDD laptop for storing blockchain - slow synchronization - would an external SSD help?

I'm currently using the GUI wallet (v0.12.0.0) and have the blockchain stored on an old HDD Macbook which rarely goes online. Although it gives some purpose to an old laptop, synchronization can be ...
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91 views

Where to find the Monero blockchain by itself?

as many of you know it takes a huge amount of time to sync-up to a full Monero node. So what I want to do is download the blockchain(or at least most of it) so it is much quicker; and then point that ...