Kovan syncing issue

[chuacw]

Before filing a new issue, please provide the following information.

I'm running:

• Parity version: Parity/v1.7.8-stable-d5fcf3b-20171025/x86_64-windows-msvc/rustc1.20.0
• Operating system: Windows 2008 R2
• And installed: via installer

When trying to sync, I got the following error:
2017-10-31 23:38:57 Stage 3 block verification failed for #4545003 (4b41.724a)
Error: Block(UnknownUncleParent(8f028f7420ba230e57dca050982f54b484208914e89073f00ac9c07b954376f0))

2017-10-31 23:45:39 #11816 0/25 peers 2 MiB chain 808 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 req/s, 110 µs
2017-10-31 23:46:09 #11816 0/25 peers 2 MiB chain 808 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 req/s, 98 µs
2017-10-31 23:46:39 #11816 0/25 peers 2 MiB chain 808 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 req/s, 106 µs
2017-10-31 23:47:09 #11816 0/25 peers 2 MiB chain 808 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 12 req/s, 109 µs
2017-10-31 23:47:39 #11816 0/25 peers 2 MiB chain 808 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 9 req/s, 98 µs
2017-10-31 23:48:09 #11816 0/25 peers 2 MiB chain 899 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 req/s, 124 µs
2017-10-31 23:48:39 #11816 0/25 peers 2 MiB chain 899 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 req/s, 104 µs
2017-10-31 23:48:59 Syncing #4545002 ff2c.5de6 0 blk/s 0 tx/s 0 Mgas/s 0+ 0 Qed #4545000 1/25 peers 2 MiB chain 899 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 12 re
q/s, 110 µs
2017-10-31 23:49:09 Syncing #4545002 ff2c.5de6 0 blk/s 0 tx/s 0 Mgas/s 0+ 0 Qed #4545000 1/25 peers 2 MiB chain 899 KiB db 0 bytes queue 2 MiB sync RPC: 1 conn, 11 re
q/s, 78 µs

I have ran parity db kill --chain kovan and it's still showing up again.

The commands I ran are:
"c:\Program Files\Parity\Parity\parity.exe" kill db --chain kovan
"c:\Program Files\Parity\Parity\parity.exe" --chain kovan --rpcapi "web3,net,eth" --cache 4096

[melnikaite]

Try to remove chains folder, it contain some cache
You can find DB path to this folder when start parity

[5chdn]

You don't have any peers. Please report if this still occurs after removing the nodes.json file in the chains subdirectory.

[phahulin]

Hi, @chuacw
were you able to resolve this issue? We seem to have the same problem on our private network.

[igorbarinov]

@chuacw did you solve the problem?

[chuacw]

@phahulin @igorbarinov I think I removed the nodes.json and it eventually worked for me.