edited

[Tony.waxx]

edited

[Findingnemo]

The first step you need to do, check out the version for the wallet you installed if it is an old then update it to the latest version and try syncing it. The most wallet has sync issues when the wallet gets outdated.

[Tony.waxx]

The first step you need to do, check out the version for the wallet you installed if it is an old then update it to the latest version and try syncing it. The most wallet has sync issues when the wallet gets outdated.

I installed latest version but problem not solves still.

[Lucius]

Are you sure your wallet doesn't sync? I know the question may sound silly, but it's a very slow process because of the amount of data that needs to be retrieved. The amount of data you need to download is over 240 gigabytes, and the download time depends primarily on the speed of your internet connection, though not exclusively about it.

I suggest you read this article, and particularly pay attention on Check wallet connection and add nodes, but to all other advices.

I don't know if you have any particular reason to use this wallet, as there are alternative solutions that do not require downloading the entire blockchain.

[Ryker1]

Well, if this is not an outdated version of the wallet problem you use and not also your internet connection, I doubt you must watch this youtube video because this is related to your case, you know how to Repair a Qt wallet that won't Sync. https://www.youtube.com/watch?v=FGYynPiscyM. Indeed, I feel doubted that might your blockchain data may corrupt and that's why it is hard to sync actively the node and it showing green color once it is syncing.

[malevolent]

Can you post the link from which you downloaded this wallet? Was it from here: https://bitcoincore.org/en/download/ or here: https://bitcoin.org/en/download

Or was it from somewhere else?

Were you upgrading from a very old version?

Is it syncing at all? "Help" -> "Debug window" -> "Network Traffic" to see if anything is being downloaded.

[HCP]

I have installed a QT wallet but it not sync.

When you say "a QT wallet"... is that actually Bitcoin Core (aka Bitcoin-QT)... or some other altcoin QT Wallet?

[CucakRowo]

~ I reinstalled Windows 10 not worked, I changed my OS to  win 7 but not worked, Even I installed windows XP but wallet not sync at all. I installed microsoft Net freamwork but it not helped~

With all this install & re-install activities, hopefully you already saved your private key on a safe place.
Same question (as already mentioned on above comments), what kind of QT wallet coins you were using?
If BTC, i will suggest you to using hard wallet or electrum wallet.

For electrum :

Table of contents

      1. What is Electrum?
      2. Creating a new wallet
      3. Using Electrum
      4. Enabling a full list of addresses
      5. Notes

For more infromation :

ELECTRUM - UPDATE SAFELY AND AVOID PHISHING WALLETS ?

Electrum wallet is one of most favorite non-custodial bitcoin wallets. This wallet is light, high trusted, and has advanced features that some low-quality bitcoin wallets don't have.
~

Read more, to have more fears on fake, phishing Electrum wallets, and being more careful.
[Warning]: Another Electrum Phishing site on the loose
⚠⚠️⚠~Beware on active phishing Electrum websites~⚠⚠️⚠ (Collection list updated)
Electrum vulnerability allows arbitrary messages, phishing