SharePoint has an odd behaviour, if you accidentally make changes to a published document it will create a X.1 draft version, you can’t actually delete it.
All other versions – X.2, X.3 etc can be deleted, just not the X.1 version, so you will need to restore the last published major version instead.
If you didn’t make any changes in the X.1 version, you can just publish it, but if you’ve made changes you don’t want to keep then follow the below.
Steps to Restore the Last Published Version
- From the file Version History
- Click the Ellipses ( … ) next to the file name
OR
Select the file and click Version History from the ribbon. - The Version History panel will show both major versions (e.g., 1.0, 2.0) and minor versions (e.g., 1.1, 2.1).
- Click the Ellipses ( … ) next to the file name
- Identify the Last Published Version
- Look for the most recent major version (e.g., 2.0) in the list.
- Restore the Published Version
- Click the dropdown arrow next to the published version you want to restore.
- Select Restore.
- Confirm the action when prompted.
- Republish the document now.
- The restored version becomes the new current version.
- SharePoint creates a new major version number for it.
- The unwanted minor version (e.g., 2.1) will no longer be active because the published version has replaced it.
- All users will now see the restored version as the latest published version.