It sounds like the issue you are experiencing may be related to file permissions. In Windows, file permissions determine who can access, modify, and delete certain files. If your account is not a member of the Administrators group, you may not have the necessary permissions to access or modify files on the desktop.
To check your file permissions, right-click on the file or folder you are trying to access, select Properties, and then click on the Security tab. Here, you can see who has permission to access the file and what level of access they have.
If your account is not listed with full control permissions, you can try taking ownership of the file or folder. To do this, right-click on the file or folder you want to take ownership of, select Properties, and then click on the Security tab. Click on the Advanced button, then on the Owner tab, and click on the Edit button. Select your user account and check the box for "Replace owner on subcontainers and objects" if you want to take ownership of all files and subfolders within the folder. Click OK to apply the changes.
Once you have taken ownership, you should have full control over the folder and its contents. If this does not work, you may need to check your account permissions or consult with your IT department to ensure that you have full administrative access.