Do the services be affected when the devices disable the STP?

Hi Hobbit,
If you disable STP on the non-root bridge first and then disable STP on the root bridge, the services will not be affected.
If you disable STP on the root bridge first, the interface status on the switch unchanged and is still in the forwarding state. But if the none-root bridge does not receive BPDUs from the root bridge within the timeout period, it sets all the interfaces to the block state, and calculates the spanning tree. After the calculation is complete, all interfaces on the device are set to the forwarding state. In this case, services are interrupted for a short period of time.