Hi @Angela Grater ,
1.To stop this from checking in & out, you need to ensure that this setting is turned off. Here’s how you can do that:
- Navigate to the document library in SharePoint.
- Go to the library settings.
- Under "Versioning Settings," look for the option that requires documents to be checked out before editing and set it to "No."
2.f you're using Excel for the web, you can only check in from the SharePoint document library. Once you're done making changes in the workbook, close the browser tab for the file, switch to the document library, and follow the steps above under "Check in from the SharePoint document library."
If you're using a desktop version of Excel for Windows, you can check in a workbook from within the app.
Select File> Info > Check in.
Add a description of your changes in the Check in dialog box.
Select OK.
Reference:https://support.microsoft.com/en-us/office/check-out-check-in-or-discard-changes-to-files-in-a-sharepoint-library-7e2c12a9-a874-4393-9511-1378a700f6de
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