Hi @Tevon2.0 ,
Whether the issue occurs when you browse other none-SharePoint pages? Try to switch to Chrome or other browser to check if the issue exists.
Based on the error message, it seems the Windows issue which might block browser to connect to the internet.
Try to rename connections folder in Windows Registry and follow below steps:
Step1: Open Windows Registry – press down Windows key + R and type regedit into the Run prompt, click OK.
Step2: Expand folders in the given order – HKEY_LOCAL_MACHINE > Software > Microsoft > Windows > CurrentVersion > Internet Settings > Connections.
Step3: Right-click the Connections folder and Rename it to ConnectionsX. Click Enter to save.
Besides, a third party antivirus can also block browser from accessing the internet. Please temporarily disable the antivirus and see if this causes the issue to occur.
Here are other ways to fix the issue: How To Fix INET_E_RESOURCE_NOT_FOUND Error on Windows 10?
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