Xbox Pass for PC Issue

Hi,

I will try to summarise this as best I can and I am hoping someone has some ideas to help me

Summary:

I joined Xbox Pass for PC a few days ago. I was able to download 2 games and play without issue (thinking back now, both are Microsoft Studios games). I realised I was installing to C drive so changed it in the xbox app to D drive. Nothing has installed
since.

Details:

- The games download 100% but then fail to install with a 0x80070001 error

- The files are sitting on my D drive ready to install

- Have tried putting it back to C drive without any success

- They (have tried 3 games since) fail in both Xbox app and Windows Store

- I have successfully downloaded other apps and games from the Windows store since this happened, so its only xbox pass games

- Both C and D are internal NTFS drives

- I am admin on my PC

- I am running Windows 10 Home, Insider edition v19451.1000

- I am running xbox app version 2001.1001.4.0

- We found my xbox account was set to UK, but my PC to Australia (I am in Australia) and we have since fixed that

- I have done a 'clean' boot

- I have reset the Xbox App in Apps and Features

- I have checked all updates

- I have redownloaded Game Service via powershell

- A MS tech redownloaded both the xbox app and windows store via powershell

- The last tech then refused to help me because I am on an insider build. I get he isnt on an 'insider' team but all this has been on insider and I really do not believe it is related

Umm I think that's it.....Ask me anything as I may not have tried it yet.

:)