But they do this anyway for us.
Updates come from the antivirus, Microsoft, and more. So it may not be what you installed but others.
The issue with Skype is only for reference that folk might install something and then find it affects applications you never thought would be impacted. Skype for example is a chat/voip thing so who would have guessed it can impact a web browser.
Since clues are sparse here we have to move to the usual advice.
1. Use another browser.
2. Disable all plug ins.