If you have purchased Total Commander, you received a wincmd.key file. To install it exclusively:
C:\TotalCMD\wincmd.key (if write permissions allow) total commander wincmdkey exclusive
When you purchase a license for Total Commander (currently €44 for a permanent license, including version updates up to the next major version number—e.g., 10.x, 11.x), you receive a small text file. That file is . If you have purchased Total Commander, you received a wincmd