After purchasing a domain you would prompt to set it up. But after successfully domain setup most of us do a silly mistake that they don’t enable www redirect. As a result when you type your Blog URL with www they Blogger display error page.
Many people think that this error evolved from Domain. But in real this is a problem of Blogger.
While we create a Blog on Google Blogger then we get a Google hosted domain that comes with yourdomain.blogspot.com and when we setup a third party domain then we must use that naked Google hosted domain with third party domain (yourdomain.com).
In real your Google hosted domain redirects to third-party domain nothing else.

As a result when you type yourdomain.com then it works fine. But when you add www.yourdomain.com then Google Blogger
will display an error page, because DNS server can’t recognize your third party
domain with www.
As a result we have to solve this issue by enabling non-www
to www redirect feature in our Blog. And this is very easy to activate.
Step #1: Log in to your Blogger Account and Go to your Blogger Dashboard
Step #2: Click on -> Settings -> Basic->
Step #3: Now locate Blog Address. Under Third party domain settings
click Edit link.

Step #4: And put tick on the check box where written Redirect yourdomain.com to www.yourdomain.com. In your case your purchased domain name will display instead of yourdomain text.
Step #5: Finally click Save button to enable the features.
Now type your domain URL without www (e.g. yourdomain.com) in web browser and see
your domain is automatically redirected to (www.yourdomain.com).
That’s
it non-www to www Redirect Problem in Blogger now solved. The main
benefits of using this redirect is that majority of user while try to enter
into a website then they start web address with www. So if you don’t activate
this feature then Google will display error page. As a result you will lose big
chunk of traffic every day. So I recommend it to enable this feature on your
Blogger Blog.
Thanks
how to solve for https://non-www to https://www on blogger...
Thank's
You are most welcome. :-bd
Hi Mas Lzaaz :yeh
Process is still same. After following this tutorial You have to enable HTTP to HTTPS redirect.
please check my another tutorial.
https://www.bloggerspice.com/2018/03/HTTPS-for-blogger-custom-domain.html
Thank you
Thank you , my problem solved and now freesoft15.com redirect to www.freesoft15.com
Thanks for following my tutorial :up
ahh great.. it worked for my blog killerstatus.com to www.killerstatus.com ... thanks for this guide
Great to see that :)
very helpful
Thank you :)
great its helped me a lot thank you from https://www.onlineday.ooo
You are most welcome :)