Assalam o Alaikum , Doston mere pass ek excel ki file hai jis mein may last 1.5 years se office ka data save ker raha hon or mene ek he file mein 10 sheets banai hai or her sheet mein formula dala hua hai ,, aaj achanak us file ko kia hua kay mein us file ko open ker raha hon tu file tu open ho jati lekin blank show ker rahi hai , file ka size bhi 3.8mb show ker raha hai lekin blank hai , muje mere colleague ne bataya kay file corrupt ho gai hai , mene google pe kafi searching ki lekin excel file corrupt repair ka software kahin bhi free nahi hai , mein ab is excel file ko kese theek karun koi backup bhi nahi bnaya mene or boss ne dimagh alag khaya hua hai ,kindly mere is issue ko resolve ker dein plz ,, its a request.