Well it says ( here,
https://www.google.com/search?q=how+big ... e&ie=UTF-8 ) that you need about 10 GB free Hard drive space to do a windows update !!!!
You are getting very low on space.
Here from Microsoft, you can see how maybe to free up disk space
https://support.microsoft.com/en-us/win ... y%20update.
Basically, try deleting temporary files and anything that you do not need, de-frag your disk, clean your registry, if if are ok with it, reduce the size of the system restore, but this may be bad if your system crashes !!!.
Maybe buy an external SD stick, and move, pics, movies, music and documents to it, to free up storage space, or/and move stuff to a cloud based storage system.
Maybe update your Hard drive/SSD or get a new computer with more space available....
Sorry its work and hassle, but that's part of the price you pay for having a computer
OR try moving to a low space operating system like, ubuntu, but again thats a lot of work and you need to understand what to do.
Guess you could try switching off windows updates, but then your system maybe less safe and you will miss any new features and updates that you get from Microsoft for free