Class not Registered upon clicking change adapter settings Help

Hi, maybe you might find sthg here that may suggest a solution, although it does rather seem as though this is not amenable to an easy answer:
http://answers.microsoft.com/en-us/w...f-76a728d2983a
http://answers.microsoft.com/en-us/w...e-db3b7fbe732b
networking woes. - The Other Place Forums
Vista Networking Issue - Windows Vista

Do you have any restore points? Do you use disk imaging? The latter is most strongly recommended to (probably) get you out of stressful and technically difficult situations (Aomei Backupper, Macrium Reflect - both free).

Can you advise what happened before this that might have been the cause?

Just a thought.. did you install (or upgrade to) Win 10, then receive the November upgrade? If so, and you have no other backup, you could try reverting to the Win 10 build prior to that upgrade, if you didn't have the problem then.

(Same process as e.g. reverting from Win 10 to, say, Win 8 if you had upgraded from win 8 within 30 days, but in this case, build 10586 to previous build).

Please note that 1 liners like 'bump' are not acceptable under forum rules.

Ok, then suggest the options I gave you to revert to a working state.