...

[Ghepetto]

Don't use bitcoin qt then. I agree it is a bit of a ballache for new users but I don't really think there's any need to use it with all the lite clients we have nowadays. Get one of them or a blockchain.info wallet and you're good to go immediately.

No, I will never leave my coins and private keys on a website I don't control. Maybe that's fine for people who use small amounts of Bitcoin, I use hundreds of thousands of dollars worth of Bitcoin so it simply isn't an option.

I'm going to have to go ahead and advise against storing hundreds of thousands of dollars worth of BTC on a laptop connected to the internet. 

[ajareselde]

Don't use bitcoin qt then. I agree it is a bit of a ballache for new users but I don't really think there's any need to use it with all the lite clients we have nowadays. Get one of them or a blockchain.info wallet and you're good to go immediately.

No, I will never leave my coins and private keys on a website I don't control. Maybe that's fine for people who use small amounts of Bitcoin, I use hundreds of thousands of dollars worth of Bitcoin so it simply isn't an option.

I'm going to have to go ahead and advise against storing hundreds of thousands of dollars worth of BTC on a laptop connected to the internet. 

It doesnt have to be. He can move the wallet.dat away from PC and to a secure drive while he's not using it. Right now it's important for OP to sync with the network,
nothing more. Later he can just return the wallet.dat to its place.
At this point i would delete everything but the wallet itself, just copy it and return there later (check manualy for roaming/bitcoin/), and reinstall core. There's no chance router is giving you problems with port now if it worked before..
Check out Electrum if you're considering to change you client, im starting to move there also, but mainly because core is slow, not because i think its bad overall.

cheers

[hhanh00]

2015-06-07 20:06:24 ERROR: AcceptBlockHeader : block is marked invalid

The last block you downloaded failed validation, was marked as invalid and written to disk. At this point, you are stuck behind it.

1. Install the latest official client.
2. Then use the RPC command "reconsiderblock lastblock you have", i.e. reconsiderblock 331000 (or 330299 or 331001)
You get the right number with "getinfo".

[AgentofCoin]

Have you tried restarting your computer?   

[Amph]

Don't use bitcoin qt then. I agree it is a bit of a ballache for new users but I don't really think there's any need to use it with all the lite clients we have nowadays. Get one of them or a blockchain.info wallet and you're good to go immediately.

No, I will never leave my coins and private keys on a website I don't control. Maybe that's fine for people who use small amounts of Bitcoin, I use hundreds of thousands of dollars worth of Bitcoin so it simply isn't an option.

I'm going to have to go ahead and advise against storing hundreds of thousands of dollars worth of BTC on a laptop connected to the internet. 

why not? if the computer is clean and he is not using it for something else i can't see any problem, you have a easy spendable wallet in this way, and to be secure that your destkop is clean , format the hdd everytime you put you precious wallet inside

there are virus that target the bios yes, but this is another story

[Meuh6879]

Have you tried restarting your computer?   

yes, restart and shutdown is not the same result on Win8 ...  if you don't have change this on energy proprieties.

[pepto]

I'd start over. Something is corrupt. Remove Bitcoin QT including the bitcoin %appdata% . Disable antivirus. Connect direct to internet bypassing router and download QT. You'll get far more than 8 active connections (I've had 28 connections doing this, essentially you're running a full node).  It will still take a day or so to download all the transactions. Then go back through your router and reenable antivirus. (I use v0.9.3.0 so this may not help with the latest version)

[BillyBobZorton]

Bitcoin Core was the first wallet that I ever used/downloaded, I still have it but only use it for change really & the signature campaign that I am in, the entirety of my main stash is in cold storage.
I initially used Core because back then as a total noob I wanted to use the 'official product', basically just wanted to be safe & not get scammed.
It takes way too long to download & even now when I catch up on a weeks worth of blocks or something it often gets stuck on e.g. '12 hours to go' for ages so I have to close it down & start it back up again to kick it back into action.
If I started again as a noob today with more knowledge I wouldn't bother downloading the whole blockchain with Core.

What are you using for cold storage?
Im paranoid myself with anything that doesn't have the blockchain downloaded locally myself. Electrum would be just as good I guess, but im used to core.
Is Armory better and works faster?

[ajareselde]

I called AT&T to unblock the port, and totally deleted all files and re-installed, and now its downloading nicely. 12 gb so far. Still only in december 2013 tho.

No one hit the nail on the head here for the 0.045 btc bounty, but I'll be sending 0.01 btc to the people who provided hints that pointed me in the right direction once its completely synchronized.

Wait.. Your provider is blocking common bitcoin port by default ? Or you just mean for them to remote port forward on your router via remote router login?
Anyways glad to see you making progress. Keep us informed on how's it going.

cheers

[Lauda]

-snip-

Time and time again government agencies and banks are publishing laws about Bitcoin that say it is dangerous due to widespread theft, and a laundry list of all other possible negatives with no positives, which is the definition of bias. There are big forces at work trying to keep Bitcoin down and it's had a major effect, Bitcoin's market capitalization has constantly declined for most of the time between now and the peak in late 2013, when Bitcoin hit the scene and got the attention of all the banks and lawmakers. It's been quite steady for 6 months since January though, even bad news constantly released by the government and outright destruction of major Bitcoin players isn't causing drastic crashes. I think this is because Bitcoin is inexorably expanding across the globe and there's more demand to buy it. I think Bitcoin will grow in capitalization nicely from now until many years in the future, unfortunately the government of the USA is likely to obliterate the major Bitcoin corporations like Coinbase, and the smaller corps with several million of sales per year will be forced out of business by regulations. They will say Bitcoin is a direct threat to freedom by funding terrorism and drugs, even though it greatly expands our freedom, and there's magnitudes more greenbacks used for illicit purposes. Ultimately the price of Bitcoin will go sky high as it becomes completely black market and the government and banks cut off all supply flow that they can, and seize as much Bitcoin and money as possible.

Bitcoin corporations who are trying to do it by the book are writing their own death warrants by giving the government complete knowledge of their operations. They won't be around much longer. Major warning signs are already there, Coinbase which used to be a great exchange for all Americans is now banning their biggest customers. It's obvious the government is over their shoulder controlling them, and gradually mutilating their business until one day they issue arrest warrants for all the executives and raid their building, seizing all customer funds regardless of what theyre being used for.

Okay, how about you stop spreading nonsense and propaganda? It is unfortunate that you've had problems with the software. After making such a post, you do not deserve help.
Whenever I've installed Bitcoin Core I had none (zero) problems so far. This is on your end. You have no idea what the word 'difficult' means when setting up things on a computer. Try compiling Bitcoin yourself (or similar projects involving multiple libraries) and see what happens. All the propaganda that the governments are coming after Bitcoin is just FUD. Bitcoin is steadily being adapted by major corporations and legalized in various places. Nobody can stop Bitcoin, deal with it.
You should really educate yourself before you start making such walls of text.

[ajareselde]

Okay, how about you stop spreading nonsense and propaganda? It is unfortunate that you've had problems with the software. After making such a post, you do not deserve help.
Whenever I've installed Bitcoin Core I had none (zero) problems so far. This is on your end. You have no idea what the word 'difficult' means when setting up things on a computer. Try compiling Bitcoin yourself (or similar projects involving multiple libraries) and see what happens. All the propaganda that the governments are coming after Bitcoin is just FUD. Bitcoin is steadily being adapted by major corporations and legalized in various places. Nobody can stop Bitcoin, deal with it.
You should really educate yourself before you start making such walls of text.

Im against propaganda also, but it's a fact that his ISP blocked bitcoin core port, theres no conspiracy there, it's a fact.
What right do they have to block people's ports? If im paying for a line i want no limits on it, and i want to be asked if i agree with such a thing. This is not DPR Korea.

[Lauda]

Im against propaganda also, but it's a fact that his ISP blocked bitcoin core port, theres no conspiracy there, it's a fact.
What right do they have to block people's ports? If im paying for a line i want no limits on it, and i want to be asked if i agree with such a thing. This is not DPR Korea.

I acknowledge that being a fact indeed. However,you don't have to ask such questions. Since people are so convinced that ISPs have no rights, sue them and see what happens.
It requires some simple diagnostic to identify the port that it is closed. Then all you have to do is call your ISP and you're done.
Is this really hard for people? What OP is doing is that he is generalizing his problem. I don't think that the majority of users (so far) have had problems with the Core. Besides, there is a reason why the software is in beta.

For the record I'm in complete control of my router(s) and the ISP has been told not to lock anything.


Update: Corrections and additions.

[okae]

dont despair, it took me arround 3-4 days to my laptop to have it fully sync, was more hard than on my current pc.

but is just a question of time, soon orlater it will sync, just be patient sometimes on my laptop it seems like was frozen but it was not

btw you can check it the database it is increasing, if it is, then you just need to w8 a little bit more

[HCLivess]

this qt is indeed horrible
I expected some improvement with patching to 10.2 but instead it jsut got worse

[Xialla]

I've been trying to install Bitcoin QT on my new laptop for several days now.

I really don't think that QT is for end-users with some laptops. If you want to run full node and support bitcoin, just order some VPS. If you just want to use bitcoin, go with electrum or multibit. if you want to store it, print paper wallets...simple.

[Lauda]

I've recommended Bitcoin QT to all my customers who use Bitcoin longterm, and never had one successfully install it ever. The average joe simply doesn't understand the internal workings of networks and computers, so they got little chance of a successful Bitcoin install if any problems arise. Seems like big companies like AT&T are default blocking the Bitcoin port, so most people end up with no synchronization and give up. Not pulling that out of my ass, customers tell me that their wallet stopped loading. End result is a lot less nodes and a lot more theft; hackers stealing funds is a major plague that isn't talked about enough, and it scares away many users. The most advanced thing I've seen my customers with is multibit which is kinda better cause users can save their Bitcoins by importing wallet and private keys somewhere else, but still it is quite hackable. And I've had literally hundreds of customers, most use blockchain.info and localbitcoins wallets, both notoriously insecure.

I wonder if it's possible to open up Bitcoin to all ports in a future release? So that our lovely internet companies can't stop Bitcoin nodes from installing as long as the internet is on. Successful core installations would drastically increase.

So you're saying that the problem lies in the companies in the USA? That's a bit different from the thread title. This would only be partially Bitcoin QT's problem as it is tied to a single port.
However, I've had a much different experience as I'm across the globe. I haven't found any issue in regards to Bitcoin QT or any other wallet (altcoins; in the past). You have to consider that most of the work is being done on the protocol and internal functions (bugfixes and whatnot) rather than the GUI and simplifying the installation/usage.

this qt is indeed horrible
I expected some improvement with patching to 10.2 but instead it jsut got worse

You made a mistake. You've patched to 0.10.2; not 10.2. Anyhow I'm still on a older version; what's wrong with 0.10.2?

[sdp]

If you still get this problem when it downloads up to December 2014, I would be interested in the hash value of last accepted block, I am running bitcion-qt now and it reports 24 weeks behind.

If BitcoinXT branch succeeds it will be potentially even more bandwidth intensive to run a node.  The war itself will be as damaging, we might see a loss of confidence as people won't know which is going to be a winning side and there be a loss of adoption and use and thus value of bitcoin.


sdp

[shorena]

I've recommended Bitcoin QT to all my customers who use Bitcoin longterm, and never had one successfully install it ever. The average joe simply doesn't understand the internal workings of networks and computers, so they got little chance of a successful Bitcoin install if any problems arise. Seems like big companies like AT&T are default blocking the Bitcoin port, so most people end up with no synchronization and give up. Not pulling that out of my ass, customers tell me that their wallet stopped loading. End result is a lot less nodes and a lot more theft; hackers stealing funds is a major plague that isn't talked about enough, and it scares away many users. The most advanced thing I've seen my customers with is multibit which is kinda better cause users can save their Bitcoins by importing wallet and private keys somewhere else, but still it is quite hackable. And I've had literally hundreds of customers, most use blockchain.info and localbitcoins wallets, both notoriously insecure.

I wonder if it's possible to open up Bitcoin to all ports in a future release? So that our lovely internet companies can't stop Bitcoin nodes from installing as long as the internet is on. Successful core installations would drastically increase.

So you're saying that the problem lies in the companies in the USA? That's a bit different from the thread title. This would only be partially Bitcoin QT's problem as it is tied to a single port.
However, I've had a much different experience as I'm across the globe. I haven't found any issue in regards to Bitcoin QT or any other wallet (altcoins; in the past). You have to consider that most of the work is being done on the protocol and internal functions (bugfixes and whatnot) rather than the GUI and simplifying the installation/usage.

this qt is indeed horrible
I expected some improvement with patching to 10.2 but instead it jsut got worse

You made a mistake. You've patched to 0.10.2; not 10.2. Anyhow I'm still on a older version; what's wrong with 0.10.2?

Id like to add some points here. If you (OP) have problems with core/qt, why suggest it to someone else in the first place? If people constantly complain about something, why suggest it to the next person? Suggesting bitcoin core/qt to people with low tech skills should be no problem in itself. The only thing I did on a windows machine was to double click the executable, verifying the checksum is not something most people do anyway. The most linux distros have repos with bitcoin core/qt.
Even though I never had any issue with core/qt I would not recommend it to certain people, but rather suggest a wallet like Multibit or Electrum. They are as secure as bitcoin core/qt, easy to use and esp. with Electrum its easy to create a backup.

[jonnybravo0311]

I'm confused why OP believes it necessary to open port 8333 to sync up the core software.  Yes, opening the port makes you a better citizen of the Bitcoin ecosystem, but it isn't required.

[2112]

I wonder if it's possible to open up Bitcoin to all ports in a future release? So that our lovely internet companies can't stop Bitcoin nodes from installing as long as the internet is on. Successful core installations would drastically increase.

Stay away from this dude! Never make a mistake of being his "customer". This is classic example of a total dumbass who has no basic understanding of networking and computing. "Open up Bitcoin to all ports"? How so?

This guy is completely incompetent on several levels:

1) Typing "mcafe" to google gives "mcafee removal tool" as a second choice. One doesn't even to have to type the whole 6 letters of the company name to learn how to remove the expired antivirus.

2) Many (if not most) ISP offer a ISP-side firewall as a protection to the beginning customers who may have trouble understanding and configuring their equipment. This is especially important to the ISPs that use DSL equipment (like AT&T) because of the possible complication in accidentally setting "bridge mode" in the equipment (and also due to older releases of Windows supporting native DSL protocol which is ATM(Asynchronous Transfer Mode) not the IP).

3) Every ISP that I've seen has a self-service way of removing this ISP-side firewall. I haven't seen AT&T pages recently, but couple of years ago this was just a couple of clicks on their customer service pages. Other ISPs require changing the login from e.g. "user@isp.com" to something like "user@isp.com/nofw" or "unsafe-user@isp.com".

4) Bitcoin Core for sure doesn't require any incoming connections to properly synchronize.

Again, stay away! The completely technically incompetent vendors is one of the major risks for Bitcoin users. If you need a refresher go lookup the history of shtylman and his Bitfloor that is detailed on this forum (especially his hare-brained implementation of "air gap").

If using the Internet required something like the driver license this guy would have failed his exams at the level of not being able to tell which way is left and which way is right. Not being able to tell the difference between incoming and outgoing connections is about the same level of incompetence.

This is just a beautiful example of stupid vendor serving the stupidest customers.

I've recommended Bitcoin QT to all my customers who use Bitcoin longterm, and never had one successfully install it ever. The average joe simply doesn't understand the internal workings of networks and computers, so they got little chance of a successful Bitcoin install if any problems arise. Seems like big companies like AT&T are default blocking the Bitcoin port, so most people end up with no synchronization and give up. Not pulling that out of my ass, customers tell me that their wallet stopped loading. End result is a lot less nodes and a lot more theft; hackers stealing funds is a major plague that isn't talked about enough, and it scares away many users. The most advanced thing I've seen my customers with is multibit which is kinda better cause users can save their Bitcoins by importing wallet and private keys somewhere else, but still it is quite hackable. And I've had literally hundreds of customers, most use blockchain.info and localbitcoins wallets, both notoriously insecure.

I wonder if it's possible to open up Bitcoin to all ports in a future release? So that our lovely internet companies can't stop Bitcoin nodes from installing as long as the internet is on. Successful core installations would drastically increase.

Edit: I'm preserving turtlehurricane's signature, because something is telling me this is going to be another disaster.

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