How to resolve this error in SSIS .ispac has been used by another process

Sometimes in SSIS, you may encounter this error when try to execute a ssis package

 

The process cannot acces the file 'ssisproject.ispac' because it is being used by another process.

 

Solution:

End all dtsDebugHost.exe under Processes

Name might be different if OS is windows2012

Detailed explanation here:

http://microsoft-ssis.blogspot.ca/2013/12/the-process-cannot-acces-file.html