Facebook, the social network that once invited everyone to be friends, has become more selective about who can add you as a friend. This often leads to frustration, especially when you discover that a mutual friend has changed their account and now Facebook won't let you add them. Let's explore why Facebook sometimes suggests certain people as friends and then blocks a request, and the various reasons behind these decisions.

Understanding Facebook's Suggestion Algorithm

Facebook suggests friends based on mutual acquaintances, shared interests, and similar social connections. It aims to connect individuals in a way that makes sense within the complex web of relationships that exist on the platform. However, there are many instances where Facebook will not allow you to send a friend request, often displaying a message stating, "you may not know this person." This is because of Facebook's terms of service which stipulate that you can only add people you know in real life.

Privacy Settings and Restrictions

One common reason for the inability to send a friend request is the privacy settings of either you or the person you are trying to add. Facebook allows users to set their privacy such that friend requests are only accepted from friends of friends. If the person has these settings, you will need to ask them to send you a friend request.

Another issue could be blocked or restricted accounts. If the person has blocked you from their previous account or has restricted their current account, you won't be able to send a friend request. The same applies if you have blocked them before - you need to unblock them to proceed.

Additionally, if someone has deactivated their account but not deleted it, you won't be able to send a friend request, but you can still send them a Messenger message.

Facebook's Maximum Friends Limit

Facebook has a limit on the number of friends a user can have, currently set at 5000. If the person you are trying to add has reached this limit, you won't be able to send a friend request.

Bot Behavior and Technical Glitches

Facebook is also programmed to limit friend requests sent in a short period to prevent spam or bot behavior. If you have been sending numerous friend requests, you might receive a notification saying when you can start adding friends again. Occasionally, there may be technical issues on the platform that prevent sending friend requests; this is usually resolved by trying again later or contacting Facebook support.

Previous Request Denied

Facebook also keeps track of previous friend requests. If you have previously sent a friend request that was declined, you won't be able to send another request. However, you can still send them a message through Messenger.

Conclusion

Facebook's algorithm and privacy settings are constantly evolving, making the specific reasons for not being able to send a friend request vary. Understanding these factors can help you navigate the platform more effectively and find the best solutions when encountering these issues.

[1] Unable to send or accept a friend request on Facebook
[2] Why Can't I Send a Friend Request on Facebook? Resolved!
[3] How Facebook Suggests A Friend