You just need to go to this website and chose keep your free storage option. After you log in and confirm your One drive credentials Microsoft will boost your free storage from 5GB to 15GB.

The original decision to roll back from 15GB from 5GB was seen as stealing the candy from a baby and it appears that someone at Microsoft came to their senses. There are some people who will pay for the online storage and some that won't.

Dropbox took away a lot of this market and one of the key arguments to choose Microsoft over Dropbox was the storage size.

Redmond scored many customers with the monopolistic inclusion of its One drive storage solution in Windows 10 waving free storage right before customers' noses. Of course many could not resist because it was free.

The decision to limit the Office 365 users from original unlimited to 1TB didn’t go well either. Microsoft used a lame excuse that a few individuals used to store 75 TB of (and these were all adult movies. ed) and therefore Microsoft decided to punish 99.999per cent  other normal people who stored business things.