Background In the context of the COVID-19 pandemic and social distancing rules, access to in-person training activities had temporarily been interrupted, speeding up the implementation of telesimulation for minimally invasive surgery (MIS) essential skills training (T-ESTM, Telesimulation - Essential Skills Training Module) in our center. The aim of this study was to explore the effectiveness of T-ESTM. Methods T-ESTM was scheduled into 2 sessions of 3 hours through the Zoom® virtual meeting platform. The academic lectures, the tutorials for box-trainer set-up and 7 performance tasks were accessed through an online campus previous to the remote encounter for personalized guidance and debriefing. Initial (pre-telementoring) and final (post 6-hour telementoring) assessment scoring as well as timing for Task 2 (circle-cutting pattern), 3 (extracorporeal Roeder knot) and 5 (intracorporeal Square knot) were registered. Results 61 participants were recruited. The mean age was 31±5 years. 65% were surgical residents. 48% performed low complexity procedures. 52% had previous experience with simulation training. In Task 2, there was a 21% improvement in the final score obtained, as well as a significant decrease in time of 33%; in Task 3, there was an increase of 39% in the scoring and a decrease of 49% in the timing; and in Task 5, participants improved their technique a 30% and decreased the performance time a 47%. All the differences were statistically significant. Discussion Our data support T-ESTM as a reproducible and effective educational tool for remote MIS essential skills hands-on training.