When can I send a status update query to editor for paper under major revision? I submitted a paper to elsevier and it got major revision. I proceeded as per the suggestions and submitted revision. After few days the status changed to "Under Review". Now the status is still under Review even after 45 days. Can I ask the editor for a status update or should I wait further?
Depending on the field, "Under Review" can also be 6 months. The reviewers review in their spare time. If they don't have spare time or are unorganised reviews take very long time.