Lock file: C:\Users\Administrator\.gradle\caches\modules-2\modules-2.lock

产生过程：

升级AS到3.0，之前版本的AS相关文件都删了个干净，然后导入之前的项目，就产生下面的错误

Error:Timeout waiting to lock artifact cache (C:\Users\Administrator\.gradle\caches\modules-2). It is currently in use by another Gradle instance.
Owner PID: 3256
Our PID: 4204
Owner Operation:
Our operation:
Lock file: C:\Users\Administrator\.gradle\caches\modules-2\modules-2.lock

解决办法

网上好多办法，试了是都不成。最后按图操作一下。成了

$Lock file: C:\Users\Administrator\.gradle\caches\modules-2\modules-2.lock$

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