“Failed to lock C:\ProgramData\bitmonero.daemon_lock”

Question

I am trying to run monerod. After a few weeks. Getting this error.

2016-Nov-04 15:45:51.273766 Initializing cryptonote protocol... 2016-Nov-04 15:45:51.274768 Cryptonote protocol initialized OK 2016-Nov-04 15:45:51.275771 Initializing p2p server... 2016-Nov-04 15:45:51.720954 Set limit-up to 2048 kB/s 2016-Nov-04 15:45:51.721957 Set limit-down to 8192 kB/s 2016-Nov-04 15:45:51.721957 Set limit-up to 2048 kB/s 2016-Nov-04 15:45:51.721957 Set limit-down to 8192 kB/s 2016-Nov-04 15:45:51.728975 Binding on 0.0.0.0:18080 2016-Nov-04 15:45:51.728975 Net service bound to 0.0.0.0:18080 2016-Nov-04 15:45:51.728975 Attempting to add IGD port mapping. 2016-Nov-04 15:45:52.882042 Added IGD port mapping. 2016-Nov-04 15:45:52.882042 P2p server initialized OK 2016-Nov-04 15:45:52.882042 Initializing core rpc server... 2016-Nov-04 15:45:52.882042 Binding on 127.0.0.1:18081 2016-Nov-04 15:45:52.883045 Core rpc server initialized OK on port: 18081 2016-Nov-04 15:45:52.883045 Initializing core... 2016-Nov-04 15:45:52.890063 Failed to lock C:\ProgramData\bitmonero.daemon_lock 2016-Nov-04 15:45:52.891066 ERROR C:/msys64/DISTRIBUTION-BUILD/src/cryptonote_core/cryptonote_core.cpp:271 Failed to lock "C:\ProgramData\bitmonero" 2016-Nov-04 15:45:52.891066 Deinitializing rpc server... 2016-Nov-04 15:45:52.892069 Deinitializing p2p... 2016-Nov-04 15:45:52.902096 Deinitializing core... 2016-Nov-04 15:45:52.912122 Closing IO Service. 2016-Nov-04 15:45:52.912122 Failed to deinitialize core... 2016-Nov-04 15:45:52.913125 Deinitializing cryptonote_protocol...

Any idea whats causing it?

Answer 1

Most likely you were running it before and killed it uncleanly. Windows takes a few minutes to notice that the owner of a file lock has died, before it cleans up the lock.

Answer 2

For me it was a "Run As Administrator" problem.

If you are running it by clicking monerod.exe from Windows, Right Click and select Run as Administrator.