The first thing you should do here is to close all programs that are using the Excel file you are attempting to open. Please ensure the .xls file is not opened in other workbooks, add-ins, or apps.

Right-click the Excel file that you cannot open and select Properties. When the Properties dialog shows up, switch to the Security tab. Hit the Edit button to change permissions.

Choose the repair option to fix your corrupted Excel file. 4. Open the Excel file locally. Errors can also occur when an Excel file is stored in OneDrive and not synced locally. To resolve this, save ...

Then, I’ll present a quick way to force Office 365 to always open a file in the desktop environment, regardless of where you open or save it. I’m using Office 365 on a Windows 10 64-bit system.

The latest Excel app comes with the co-authoring feature. However, if you are not running the latest version of Office 365, and if the file owner keeps the file open on their Excel desktop app, you ...

A Microsoft 365 outage prevents access to files, such as Excel documents, stored on the SharePoint Online, OneDrive, Office, and Microsoft Teams cloud storage services.

Microsoft Works won’t open Excel files by default. To continue, cancel out of the dialog box and launch the Microsoft Works Spreadsheet application. Next, click File, and then click Open. Navigate to ...