Likewise, people ask, why can't I upload pictures from MAC?
The Photos Preference > General > Use as System Photo Library needs to be enabled (showing as grayed out in the panel). If "Optimize Mac Storage " is enabled, you need to ensure tat the photos you want to share have been downloaded to your Mac.
Additionally, why won't my Mac let me upload pictures from my phone? Make sure the camera or device is turned on and the camera is set to the correct mode for importing photos. Open Photos (if it isn't already open), then click the device under Devices in the sidebar. Note: Devices appears in the sidebar only when a camera or storage device is connected.
Moreover, why can't I upload photos to Facebook anymore?
A variety of problems can get in the way of you posting pictures to your Facebook account: a browser issue, a problem with the size or format of the photos, or even a technical fault with Facebook itself. An unstable connection to the Web can also cause difficulties with posting pictures.
How do I upload multiple photos from Mac to Facebook?
To select multiple photos to be uploaded at the same time, hold the CTRL key (or CMD key, for Mac) as you click on each photo to upload. Upload photos. Click on the “Open” button on the lower right corner of the small window, and the selected photos will start uploading to Facebook under a new album.
