My primary browser is Chrome, though I have the same issue in Edge. Computer is maybe 5 or 6 years old, running Windows 10. This started maybe 3-4 weeks ago...
It's really random which sites are blocked...no real rhyme or season that I can determine...
So check to see if there are any Windows updates available and then run your antivirus (I use Windows Defender);
Click on the Windows logo in the lower left corner
Click on the wheel with the cogs - Settings
Scroll to the bottom and click on Update & Security
Click on Check for Updates
After any updates are installed you may or may not have to restart. Once that's done run your antivirus.
