From @jeddah-liu on Fri Apr 14 2017 00:31:20 GMT+0000 (UTC)
When I run the ipfs in windows Command line console with the ipfs cat peers command, an api is not running echo to me;
Then I try to use the command ipfs daemon to start a long run daemon process, Error comes again, showing that can’t acquire lock: file “C’\Users\MyPC\.ipfs\repo.lock” already locked.
What happened in this process?
I check the root dirctory of the .ifps, and find that there are a repo file and a repo.lock file there. I open both file with notepad++, which shows me someting like that"{OwnerPID:11xxx}".
PS: What I installed on my PC is the go-ipfs v0.4.8. My PC OS is win7 Ultimate x64.
Copied from original issue: https://github.com/ipfs/faq/issues/247