Windows 10: My wifi says no Internet access

I've been using a wireless adapter to connect to Wi-Fi but now it just started saying no Internet access but my phone and everybody else stuff works and I've tried multiple things before and even troubleshooting

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My internet/wifi works, but Windows says "No Internet Access"

I have a Toshiba Satellite 64 bit running Windows 10.

I can connect to my home wifi and other networks and access the internet. However, the wifi icon in the taskbar has a yellow triangle and it says "Unidentified Network, No Internet Access", even though my internet access is fine.

The problem arises when I try to use something like Outlook. Outlook isn't able to send or receive mail because it believes that I don't have internet access. Cortana also doesn't work and other apps that merely check for an internet connection and don't
actually try to access the internet also don't work.

I've uninstalled/reinstalled and updated the network driver. I've also tried all of the command prompt commands listed in the Microsoft connection issue page.

 

My internet/wifi works, but Windows says "No Internet Access"

I have a Lenovo ideapad 300 64 bit running Windows 10.

I can connect to my home wifi and other networks and access the internet. However, the wifi icon in the taskbar has a yellow triangle and it says "Unidentified Network, No Internet Access", even though my internet access is fine.

The problem arises when I try to use something like Outlook. Outlook isn't able to send or receive mail because it believes that I don't have internet access. Cortana also doesn't work and other apps that merely check for an internet connection and don't
actually try to access the internet also don't work.

I've uninstalled/reinstalled and updated the network driver. I've also tried all of the command prompt commands listed in the Microsoft connection issue page.

 

W10 can connect to wider internet but cannot access web pages

I have an odd issue with my W10 laptop linked to Sky broadband in the UK via wifi using a Sky router. The effect is that while I can actually access the internet (I can send and receive emails using Outlook and can connect to other machines using TeamViewer) I cannot access any web site (Google, BBC etc). There is no specific error message, merely that the access request timed out and a suggestion that it may be to do with proxy. I have tried the following:

1. Other systems (W10 and ios) can access web sites using the same Sky router (therefore probably not a router problem)
2. I have sent and received emails using Outlook, so the broadband connection is working (probably not a Sky problem)
3. I have tried two different browsers (Firefox and Edge), no connection (not a browser problem)
4. I am using Windows Defender and have:
   1. Made sure that Firefox is in the list of allowed systems in its Firewall, no connection after a reboot
   2. Turned off the Firewall and tried again - no connection

My next step will be to re-install Windows, but has anyone got any other suggestions? Could it be some sort of virus (I have carried out a complete virus check using Defender) So - any suggestions?