This article explains how a user can sync a document library from SharePoint to your local computer. There are some concerns to performing this action, so please read the warning section in this article.
Although this is a convenient feature in SharePoint, it can cause potential issues.
For instance, files in the library will be copied to your local computer and the size could impact your storage space. So make sure you have enough space to perform this action.
Another issue that could arise is deleting files. If you delete a file from the document library on your computer, that file will be deleted from the SharePoint site as well. However, the document will be in your SharePoint sites recycling bin for 93 days. Make sure you perform any action carefully and with your teams awareness.
Syncing a Document Library
1. Direct to the SharePoint page and document library you would like to sync.
2. Select the 'Sync' button in the top banner.
3. Another menu will pop-up explaining that the sync has begun. Make sure you sign into OneDrive for the sync to occur.
4. Once the sync is complete, you can find your document library in File Explorer.