Install Tortoise. Then go to your project directory, and run SVN cleanup like suggested in this forum-question: https://forum.mendix.com/link/questions/95238
Hi Venkatesh,
You can download Tortoise SVN version:
TortoiseSVN 1.7.15, Build 25753 - 64 Bit -dev, 2014/08/09 10:23:48
Subversion 1.7.18,
You can find it here: https://tortoisesvn.net/downloads.html
Once you have installed it, you can go to the file that is conflicted in your project folder, right-click on it and click the tortoise SVN “Resolve” option.