no manual update windows 10 defender after removing current update

I removed the current cumulative update because it broke slingbox player for windows 10.

(See: https://answers.microsoft.com/en-us/...a-77fe35223baf.)

And I turned off the Windows update service.

Yesterday I was able to manually update Windows Defender.

Today not.

Microsoft has a workaround:

(See: https://answers.microsoft.com/en-us/...3-26ab8cbc5539.)

Any other thoughts? Could it be that the update service is intermittent (as is the windows mail service)?

Thanks.

don't know how.
could you give me a short tutorial.
much thanks!!

thank you!!

this morning the manual update is working.
go figure. . . .

the "38" cumulative update released yesterday fixed the problem (and the one with SlingPlayer for Desktop, which was my major concern).