Canceling a checkout unlocks the file, and discards the changes you made to the copy of the file on your computer. The repository retains the last version of the file as the current version.
To cancel checkout of a file:
Navigate to the file in the repository, and select it.
Tip: You can perform this procedure on multiple files by selecting multiple files.
Select File > Cancel Checkout.
Click OK or Next, depending on whether you cancel the checkout for one or for multiple files. To confirm cancellation for all remaining files at once, click Finish.