These are most likely leftovers from the installation process and it is safe to remove them.
However, just in case, I would first create a temporary directory on the same disk and move them into it. If no bad effects happen for several days, then they can be safely deleted.
Are these on the root of the D drive? If not, please indicate the full path. Have you designated that all programs be installed on the D drive instead of the C drive?
can you explain what you mean by root of D drive.
i have not deignated all programmes to be installed on D drive. My C drive is getting
full so I am installing some programmes on the D drive, is this ok to do this.
"Root" means the top most level. If you go to the "D" partition (drive) in Windows Explorer, it's the highest level shown. It's OK to install programs on the D drive, but if you're running out of space on C drive then it's overdue for some housekeeping. It's best to have at least 15% of disk space free on the primary drive/partition.
You should do the following:
Review your installed programs and remove any you no longer use
Run "Disk Cleanup" on C drive, by going to "properties" and clicking the named button shown in the dialog.
Install a utility like CC Cleaner (Piriform) and have it clean out unnecessary files
Run the disk defragmentation tool after all of this is done.
Those files are usually in Appdata > Local. But since you direct your programs to D, they ended up there. They are temporary (from installations) and can be deleted.
all the programmes on my c drive are being used, and all of the things you have
advised me to do are done once a month, is this ok or should they be done weekly.