For every address there will be a private key (safely stored inside the wallet file, you usually don't need to see the keys, you just need to know that they are there and that you should have backups to avoid losing them). Every Bitcoin address is derived from its own private key, if you have the key you can calculate the address from it (thats the reason why the .key file only contains keys and does not also the corresponding addresses, the addresses can be easily generated from the keys when you import it again).

You cannot generate a key from the address, if you lose a key then you lose access to the bitcoins that are lying at that particular address. If you make backups of the .wallet (or of the .key files) you can't lose your keys. Please always password protect your wallet and the key export files.

You can safely replace every occurrence of "generate a new address" with "generate a new key" and vice versa, it means the same thing. Under the hood a new key is generated (and stored in the wallet file) and from this its corresponding address is calculated and shown to you so you can use it to receive coins. You never see the key itself displayed in the user interface because you don't actually have any use from looking at it, only the wallet app needs it under the hood for its calculations when signing a bitcoin transaction.

Hello,

I use Multibit 0.5.18 for a time.today not connecting,no sync.
thank you in advance

Nice client. Donated

Hey, Im using 5.14 on my mac, Im missing 5btc. when I put my addresses on the blockchain as watch only, they showed up, and i looked at each address and the missing 5 also shows up there. Im nervous to upgrade it, should I just go ahead and do so? I have back up copies of the private keys, both in paper form and on a dongle. I noticed that multibits private addys dont start with a 5, so im assuming that I just can import them to blockchain..

Any help is appreciated... The missing 5 seemed to happen when the malleability issue was being talked about.

The program is safe for use ?

I can't withdraw less than 1 BTC?!

I get error message while trying. Reinstalling,

Try a comma (,) instead of a dot (.).

It's probably because your system treats the comma as a decimal separator, not the dot.

Scammers are now targeting MultiBit (?) and Blockchain.info - if you received the same or similar email do not click on any links in it, just delete email.

"Bitcoin MultiBit Service Yes Situation in this moment
Since our last update situation yes in this moment on our servers, we worried about the size of wallets. And many of these wallets are no funds, no movement and no logins.
Because to avoid future problems with our servers, we are requesting that all users wishing to continue with their wallets to make a brief confirmation activation.
If you want to continue using your account on Blockchain, please click the link below and confirm your wallet:
(link goes here)
If within 64 hours we do not receive your confirmation, your wallet will be erased and all their bitcoins will be reset."

Hey jim618,

Great work on the app! My favourite client to drag around on an encrypted USB drive
However, I have one teeny tiny thing that's been promised to be looked at, multiple times, in the past ~2 years. SOCKSv5 proxy.

I'm using Tails as a daily OS, and MultiBit refuses to connect. But I can't set the proxy either. Previously, the main reason of not-yet-implemented status was that Bitcoinj did not support SOCKS proxy, only HTTP - recently, this changed, see here: https://bitcoinj.github.io/networking

Could we please have some proxy goodness in the close future?