New install. Avast keeps saying an update is available.

I just bought an HP Envy Laptop, I uninstalled Mcaffe that it came with and also used the Mcafee uninstall tool. I’ve installed Avast, restarted the laptop and avast keeps saying an important update is available.

I click on update and it then tells me Avast is up to date but when I look at the Avast main screen it still says an update is available.

When I repair Avast it initially tells be everything is fine, but shortly afterwards it says an update is available and I go through the same process again.

https://forum.avast.com/index.php?topic=232641.msg1538338#msg1538338
https://forum.avast.com/index.php?topic=232823.msg1539425#msg1539425

I reinstalled Avast and that has corrected the problem.