Xbox DVR wont record says i need to be signed in to xbox live.

You should say "Xbox Record that" to record the last 30 secs. If you say "Xbox go to game dvr" it will snap the dvr but you than have to manually hit record.

I have noticed that a workaround in the comments from
xbox one wont record game dvr error 0x82323012 and you can follow the method to fix this problem by deleting some videos in your upload studios.

I had same issue of the dvr not recording when i requested ' xbox record that' I was getting the notification saying that the clip was being recorded however there was no notification saying that the recording had ended. However the dvr recorded automatically
when being promoted etc.

My fix was the snap the game dvr while playing the game so that its on in the background. Now all my xbox record that requests are now being saved and ready for editing

Sorry but you cannot record live TV from the Xbox One using DVR. You can only use the DVR to record Xbox One video games.

When I first got my Xbox, the game DVR was flawless. Recording clips in PvZ, Bf4, and Titanfall. But lately the only time the DVR works is when im playing games offline, and it automatically records certain moments. But as soon as you go online or try to
manually record a clip in any form, it just wont respond. Yelling "xbox record that," the dialog box pops up, but does not record any amount of time, nor does the 5min-30sec manual record works. The Game DVR is more frustrating then anything!