# Can not connect to Zcash's node **URL:** \ **Category:** zcashd client\ **Created:** [June 18, 2016, 5:52am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868 "2016-06-18T05:52:13Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![zqj0754](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zqj0754/32/241_2.png) [@zqj0754](https://forum.zcashcommunity.com/u/zqj0754)\ **Post date:** [June 18, 2016, 5:52am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/1 "2016-06-18T05:52:13Z")
I found that my system can not connect to the Zcash today. But my PC is online and can reach any websit. How can I to slove it? zheng@ubuntu:~/zcash$ ~/zcash/./src/zcash-cli getinfo { “version” : 110200, “protocolversion” : 70002, “walletversion” : 60000, “balance” : 40.00000000, “blocks” : 18314, “timeoffset” : 0, “connections” : 0, “proxy” : “”, “difficulty” : 0.00001121, “testnet” : true, “keypoololdest” : 1466068452, “keypoolsize” : 105, “paytxfee” : 0.00000000, “relayfee” : 0.00005000, “errors” : “WARNING: check your network connection, 0 blocks received in the last 4 hours (24 expected)” } zheng@ubuntu:~/zcash$ ~/zcash/./src/zcash-cli getwalletinfo { “walletversion” : 60000, “balance” : 40.00000000, “unconfirmed\_balance” : 0.00000000, “immature\_balance” : 320.00000000, “txcount” : 43, “keypoololdest” : 1466068452, “keypoolsize” : 105 } zheng@ubuntu:~/zcash$ ping [www.ifeng.com](http://www.ifeng.com) PING [c.xdwscache.ourglb0.com](http://c.xdwscache.ourglb0.com) (183.61.26.199) 56(84) bytes of data. 64 bytes from 183.61.26.199: icmp\_seq=1 ttl=56 time=12.3 ms 64 bytes from 183.61.26.199: icmp\_seq=2 ttl=56 time=13.0 ms 64 bytes from 183.61.26.199: icmp\_seq=3 ttl=56 time=12.9 ms 64 bytes from 183.61.26.199: icmp\_seq=4 ttl=56 time=12.6 ms 64 bytes from 183.61.26.199: icmp\_seq=5 ttl=56 time=12.8 ms ---
**Author:** ![rem](https://avatars.discourse-cdn.com/v4/letter/r/5fc32e/32.png) [@rem](https://forum.zcashcommunity.com/u/rem)\ **Post date:** [June 18, 2016, 6:01am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/2 "2016-06-18T06:01:48Z")
You must update to new release, look at this thread: > [@ZcashMiner can't connect. Connection refused](https://forum.zcashcommunity.com/t/zcashminer-cant-connect-connection-refused/859): > > Hi, after one day of successful working ZcashMiner can’t establish a connection now. It stop working after 18314 block. I see this line in a log: connect() to 46.105.126.215:18333 failed after select(): Connection refused (111) Ping to alphatestnet.z.cash (46.105.126.215) goes successfully. in short: git fetch origin git checkout zc.v0.11.2.z5 Build: ./zcutil/fetch-params.sh ./zcutil/build.sh -j8 Delete old testnet data: rm -rf ~/.zcash/testnet3/ ---
**Author:** ![zqj0754](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zqj0754/32/241_2.png) [@zqj0754](https://forum.zcashcommunity.com/u/zqj0754)\ **Post date:** [June 18, 2016, 6:15am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/3 "2016-06-18T06:15:21Z")
Thank you very much. ---
**Author:** ![zqj0754](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zqj0754/32/241_2.png) [@zqj0754](https://forum.zcashcommunity.com/u/zqj0754)\ **Post date:** [June 18, 2016, 9:48am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/4 "2016-06-18T09:48:07Z")
I just do according to your prompts. But I have another problems now. Please kindly tell me how can I do? thx zheng@ubuntu:~/zcash$ ./qa/pull-tester/rpc-tests.sh === Running testscript wallet.py === Initializing test directory /tmp/test43eC\_m Mining blocks… Stopping nodes Cleaning up Tests successful — Success: wallet.py — === Running testscript listtransactions.py === : Error loading block database. Do you want to rebuild the block database now? ---
**Author:** ![rem](https://avatars.discourse-cdn.com/v4/letter/r/5fc32e/32.png) [@rem](https://forum.zcashcommunity.com/u/rem)\ **Post date:** [June 18, 2016, 10:03am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/5 "2016-06-18T10:03:58Z")
I didn’t run any test after recompilation. Now I tried out and received the same message, but the miner works nevertheless. May be developers will explain. ---
**Author:** ![mgbtcfv](https://avatars.discourse-cdn.com/v4/letter/m/ccd318/32.png) [@mgbtcfv](https://forum.zcashcommunity.com/u/mgbtcfv)\ **Post date:** [June 18, 2016, 1:39pm UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/6 "2016-06-18T13:39:34Z")
``` "version" : 110200, "protocolversion" : 70002, "walletversion" : 60000, "balance" : 0.00000000, "blocks" : 0, "timeoffset" : 0, "connections" : 0, "proxy" : "", "difficulty" : 0.00000000, "testnet" : true, "keypoololdest" : 1466257022, "keypoolsize" : 101, "paytxfee" : 0.00000000, "relayfee" : 0.00005000, ``` ---
**Author:** ![mgbtcfv](https://avatars.discourse-cdn.com/v4/letter/m/ccd318/32.png) [@mgbtcfv](https://forum.zcashcommunity.com/u/mgbtcfv)\ **Post date:** [June 18, 2016, 1:40pm UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/7 "2016-06-18T13:40:33Z")
I am having a similar problem with connection. I deleted all old files and rebuilt z5 - but doess not work. Please help. ---
**Author:** ![Voluntary](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/voluntary/32/4343_2.png) [@Voluntary](https://forum.zcashcommunity.com/u/Voluntary)\ **Post date:** [June 18, 2016, 8:40pm UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/8 "2016-06-18T20:40:01Z")
I just re-compiled and I’m up and running now. I seem to forget to re-create the zcash.conf file and that can cause a number of issues. Is it possible that there was too much demand on alphatestnet.z.cash so soon after resetting? ---
**Author:** ![zqj0754](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zqj0754/32/241_2.png) [@zqj0754](https://forum.zcashcommunity.com/u/zqj0754)\ **Post date:** [June 20, 2016, 6:23am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/9 "2016-06-20T06:23:13Z")
I deleted all old data of Zcash, and redo it. But still have an error like bellow: zheng@ubuntu:~/zcash$ ~/zcash/./src/zcash-cli getinfo { “version” : 110200, “protocolversion” : 70002, “walletversion” : 60000, “balance” : 0.00000000, “blocks” : 2195, “timeoffset” : 0, “connections” : 1, “proxy” : “”, “difficulty” : 0.00000003, “testnet” : true, “keypoololdest” : 1466391557, “keypoolsize” : 101, “paytxfee” : 0.00000000, “relayfee” : 0.00005000, “errors” : “This is a pre-release test build - use at your own risk - do not use for mining or merchant applications” } ---
**Author:** ![str4d](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/str4d/32/64_2.png) [@str4d](https://forum.zcashcommunity.com/u/str4d)\ **Post date:** [June 21, 2016, 1:30am UTC](https://forum.zcashcommunity.com/t/can-not-connect-to-zcashs-node/868/10 "2016-06-21T01:30:20Z")
That’s not an actual error. It’s just a warning that we didn’t have enabled before (previous builds had the “is\_release” flag incorrectly set to “true”).