Up until yesterday I had few issues. Now all of a sudden, I cannot get my VPN to connect to my office network. I am running Windows 10 Pro on two different PCs and both are experiencing the same issues.

I've narrowed the situation down to being between Windows 10 and the Google Nest Wifi.

If I tether my PCs wirelessly to my iPhone, I can successfully connect to the VPN. (Not Windows issue alone)

If I connect my PC to the modem directly, I can successfully connect to the VPN. (Not ISP issue)

If I connect my iPhone to Google Nest Wifi router, I can successfully connect to the VPN via iOS. (Not Google Wifi alone??)

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There seems to be some issue with the communication between the Windows 10 PCs and the Google Wifi with regard to VPN connection.

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I have done a factory reset on the router and wifi point.

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I'm simply at a loss. It worked 24 hours ago. Now it does not.