Hello varunramakrishnan, welcome to the Microsoft community, my name is Luiz Cruz, an independent consultant and I would be happy to help you.
When trying to delete these files, is an error code provided?
Initially I recommend that you try to restart your pc with a clean boot, and check if you can delete these files:
Clean boot
Clean boot serves to determine whether a background program is interfering with the system or optimizing system loading.
- Press the Windows + R keys, type msconfig and click OK;
- In the System Configuration window, click on the services tab;
- At the bottom of the screen, check the Hide all Microsoft services box and click Disable all;
- Now click on the Programs Startup tab and on Open Task Manager;
- When loading the task manager, click on the start tab and disable all non-Microsoft programs (right-click on the program and choose disable), close the Task Manager and click OK on system configuration and restart computer if requested.
NOTE: This procedure disables all third party services and programs. You can later, if the problem is solved in this way, selectively enable the programs and services that will start with Windows, instead of keeping all disabled. If the problem returns after activating the startup of a specific service or program, the problem is exactly in the startup of this software and it is recommended to remove it.
I hope I helped, even more.