Solve the Win8.1 compressed volume can not compress all the practical skills

friends pre-installed Windows8.1 machine, but after doing a system update, but found that before the compression of all compressed volumes can not compress all, can only compress a part , once again compressed, but there is no space available, at this time to view the size of the C drive, but the space is sufficient. What is going on?
Cause analysis:
The software or patch may be installed, causing the system to create a restore point, which causes the compressed volume function to compress only the space available in the second half.
Workaround:
1. When this fault occurs, first turn off the system protection function and delete the restore point.
The specific method is as follows:
1) Enter the system properties and find the system protection. As shown in the figure:
2) Select configuration, turn off system protection, and choose to delete the restore point before deleting, as shown in the figure:
2. After the system protection is disabled and the restore point is deleted, if the C drive still cannot be compressed, it is recommended. You back up your data and restore your system with one click.
Easily solve your troubles in a few easy steps. If you encounter a compressed volume that cannot be fully compressed during the process of using Win8.1, you can quickly solve it according to the reason.