Getting error "Request rejected by callee" for word application scope. i have read some articles but I am unable to resolve the issue

i have read some articles about how to solve this but I am unable to resolve the issue. Can anyone please provide me solution of this. its a bit urgent.

This error is due to the incomplete activation of office licenses @sarthakgulati13 as per this thread excel - how to solve Exception:Call was rejected by callee. (Exception from HRESULT: 0x80010001 (RPC_E_CALL_REJECTED)) in C#? - Stack Overflow

Please check the office license activation