If your FamilySearch Login is not working, first verify that you are entering the correct account credentials and that your internet connection is stable. Try accessing your FamilySearch account separately to determine whether the issue is with the account or your FTM workflow. Also check whether your Family Tree Maker software is updated. If the account works normally outside FTM but you still cannot connect during your genealogy research, review the available account authorization or connection settings. Keeping a current FTM backup before troubleshooting is also a good precaution.