To lock your file so that other users can't open it, see Protect an Excel file. To prevent users from adding, modifying, moving, copying, or hiding/unhiding sheets within a workbook, see Protect a workbook. To know the difference between protecting your Excel file, workbook, or a worksheet see Protection and security in Excel.

Giải thích việc bạn nhận được thông báo lỗi khi mở tài liệu Word. Sự cố này có thể xảy ra nếu Word không thoát đúng cách hoặc nếu một phiên bản khác của Word đã mở tài liệu. Bạn có thể phải kết thúc quy trình Winword.exe để giải quyết vấn đề này.

Troubleshoot and fix the things that block co-authoring from working in Office, SharePoint online, SharePoint Server, and OneDrive.

When you try to open a Excel workbook, PowerPoint presentation, or Word document on your mobile device, you might receive a message stating that the file is locked for editing by another user.

You can open an Excel workbook and collaborate with others at the same time using co-authoring. This article will explain how.

Edit a protected document. Enable editing Always open view‑only only affects how a document opens. It does not control editing access, which depends on sharing permissions and document restrictions. To edit a document in Word for the web: Switch to Editing using the mode menu in the upper‑right corner. If Editing isn’t available, request edit permission or open the document in Word ...

Note The document file name is locked for editing by another user. To open a read-only copy of his document, click... where file name is the name of the document that you tried to open. Cause This behavior may occur if Word determines that the owner file for the document already exists. This may occur if one or more of the following conditions ...

Depending upon the format your file is in, the easiest solution may be to save a new copy of the file, in the modern format, and work from that new copy. You don't have edit permissions for this file If you do not have edit permission for the file, the coauthoring functionality is not available. Ask the owner of the file to grant you edit ...

Restrict changes in Excel On the Review tab, in the Protect group, review the following protection options: Protect Sheet Protect the worksheet and contents of locked cells. Protect Workbook Protect the workbook for structure and Windows. Allow Edit Ranges Determine what ranges can be edited.

How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.