Check to see if you have duplicate accounts: You may discover you have more than one LinkedIn account. If you get a message indicating the email address you're attempting to use is already in use, then you may have another LinkedIn account using that email address.

Make sure you've typed your email address correctly: Double-check the email you're adding to your LinkedIn account for any mistakes. Simple errors such as misspellings, incorrect domains (e.g., ".con" instead of ".com"), or extra spaces can prevent email verification or the addition of a new email to your account.

Confirm a primary email address is associated with your LinkedIn profile: Ensure your LinkedIn member profile has a primary email address linked to it. See Verify your email address on LinkedIn to learn more.