Insider preview works from my work computer but not my home one

[norseman]

I receive this error when clicking Windows Update:

 

"There were some problems installing updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x80240439)"

I have tried leaving and rejoining the Insider Preview but things haven't fixed themselves.

 

Installation is of a licensed Windows 10 Pro Anniversary build.

Any ideas, Neowin?