Hi,
I use SharePoint to access my documents library. When I open an Excel spreadsheet and do some changes, save the changes and everything seems to be fine. I close the Excel file and open it again. Surprise! my changes are gone. I repeated the same action many times but I got the same result, no changes saved. I did not get any error message.
There is no versioning and not check out requirement in the Library settings. I do use IE v9.
I'll appreciate any help. 

Regards
//Ashraf

Hi Ashraf,

Are you opening that Excel file to make changes in Excel client application or in browser (Excel Web App)? By your question it seems that you are using a browser to make changes and saving the excel file, since you mention you are using IE 9.

If that is the case then please execute the below steps and recheck.

1. Clean cookies in your IE 9 browser.
2. Use other browsers to open the Excel file in Excel Web App and check if same issue occurs.
3. If you are having only Internet Explorer(IE) on your system, you can reset IE.
4. Try to upload a new document and make changes again to see if the same issue occurs.