problem during update of 8.1

[Kenneth Nuthan]

hi,
I got the update for wp 8.1. After the successful download, had it install, but during the update it keeps restarting ever 1 minute from last 8 hours, and not yet completed the installation.
what should i do to make it right ?
thank you

 

[Boris Lozac]

Maybe you don't have enough space.