If someone blocks you, they won't appear in your regular friend list or search results. If you look for them, you should see a link that says "Unavailable". This is a warning that they've blocked you. In some cases, they may also unfriend you, so make sure to check this before you try to reconnect.
How to check if someone has blocked you on facebook
If you're suspicious that someone has blocked you on Facebook, there are a couple of ways to find out. The first way is to check to see whether you're still able to view their profile. If you can't, it may be because they've deactivated their account. Facebook also makes it easy to check if someone has blocked you by searching for their name on Google or any other search engine.
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The second way to check if someone has blocked you on the social network is to check the person's friends. If the person you're suspicious of has blocked you on Facebook, they should not be listed on your regular friend list or search results. If they've blocked you, they've probably changed their security settings. If you can't see a person on your friend list, try logging out of Facebook or switching to their business account.
Another way to find out if someone has blocked you on Facebook is to search the person's name on Facebook's Messenger app. When you type their name into the search bar, you'll see their profile photo, but you'll be unable to send them any messages. The account will be marked as blocked if you're unable to send them any messages.
Another way to check if someone has blocked you on the Facebook app is to search for the person in their search box. If you find the person's name, you'll see a warning that says they have blocked you. Nevertheless, if they don't appear, you should still visit their profile.
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A third way to check if a friend has blocked you on Facebook is to try and reach out to a mutual friend. Having a mutual friend with the person will help you find out the exact reason why someone has blocked you. You can even ask if the person deactivated their account.
Another way to find out if someone has blocked you on Facebook is to search the person's name in other social networking sites. You can also look through their name using Google or any other search engine. These search engines index URLs and can also be used to obtain someone's email address.