dwie osoby nie mogą jednocześnie edytować pliku excel

Hi Marcin_Zawilak_84,

if I have translated your question correctly, then to enable two people to simultaneously edit an Excel file stored in OneDrive, follow these steps:

1. Make sure that both people are using the latest version of Excel.
2. Make sure that both people are connected to the internet.
3. Open the Excel file that you want to co-author.
4. Click File > Info.
5. Under Protect Workbook, click Share Workbook.
6. On the Editing tab, select the Allow changes by more than one user at the same time check box.
7. Click OK.
8. Click Save.

Once you have enabled co-authoring, any person with the link to the file will be able to edit it simultaneously.

Collaborate on Excel workbooks at the same time with co-authoring - Microsoft Support

https://support.microsoft.com/en-us/office/share-and-collaborate-with-excel-for-windows-0f53132d-db34-4166-b874-a2f6618ac309

https://support.microsoft.com/en-au/office/collaborate-in-onedrive-d8a2a19a-e306-4ca5-9b00-19b0e96890d6