Windows 10: I am in HUGE trouble...

So my friend has a new laptop and we are sharing it to do our projects and stuffs...I had to log in to use the Copilot and the Window -> Setting turned me into the administrator...To be precise, I was only logging in Copilot not the main system or anything, but the system now...Is there anything I can do to undo that? Because I am not the owner...Please help...

:)

 

Trouble saving voicemail number

To access my voicemail it is my phone number, a pause and 4 digit pin.



I did the following steps:

• Turned off default voicemail number
• Added a , (for pause) at end of my phone number
• Added the 4 digit pin

I get the following error message We're having trouble saving your voicemail number right now. Try again later.



Any suggestions on how to correct this?

 

Supported phones for Windows 10 Mobile Insider Preview Mobile

Your list confirms my phone is eligible, Lumia 521. The windows Insider App fails after ~ 15 seconds, restores data and gives me error 80073cf9. I trouble shot this and went thru all the steps mentioned on several websites including MS without any luck. Short of a hard reset, this is where I am now. Suggestions appreciated.

 

Windows 10 fails to update


When you finish testing the Avast suggestion, make sure that you restart your machine.

Then if the issue persists, please return to the trouble shooting list in post# 89

I think there are three steps that remain; the WU troubleshooter, reset WU components, and manual WU reset.