A Microsoft file hosting and synchronization service.
Hi mahmodahmed1,
Greetings. Thank you for posting the thread to our community.
I understand your concern, it seems an Excel sheet suddenly becomes blank on your side. For the situation you’ve encountered, I do understand the inconvenience caused and feel very sorry about it.
Based on the situation you’ve encountered, I sincerely suggest you can contact the owner try to recover the Excel file’s version history: Restore a previous version of a file stored in OneDrive - Microsoft Support or try to Restore your OneDrive within 30 days: Restore your OneDrive - Microsoft Support and check whether you can restore your file or not.
If the issue persists after trying to restore previous version or OneDrive, after my research I’m afraid and sorry to say I couldn’t find related service incident either. Due to this situation, judging from this situation happens to multiple users in a global level, I’m afraid this is a temporarily server-side issue needs to be investigated from back end to find the cause. The Microsoft Support Team has higher permission to remotely assist you and collect background logs for the root cause. This is a more efficient way in handling this case for you.
If you are an admin, I recommend you get support by following steps from this link: Get support - Microsoft 365 admin | Microsoft Learn to raise a support ticket from admin center or calling the phone support to contact Microsoft Support: Customer service phone numbers - Microsoft Support.
If you are not an admin, you can contact your admin to contact Microsoft support. You can look for the way to find your admin through this link: How do I find my Microsoft 365 admin? - Microsoft Support.
Please accept my apologies for redirecting you to the related team support, as the moderators in this community have limited resources and permission to verify the backend information and to get the quick and better assistance, we requested for this.
Appreciate for your patience and understanding.
Hope you having a nice day and wish you a brilliant year ahead as well!
Sincerely,
Harry | Microsoft Community Moderator