How to acquire Sentinel-2 cloud mask files?

Question

BACKGROUND:

At 3.22.12, I download Sentinel-2 files (both L1C and L2A) using the Semi-Automatic Classification (SCP) plugin. Some of the imagery contains cloudy areas that I would like to mask out. According to the following sources, my downloads should contain additional files that contain cloud masks for each image:

• According to Sentinel-2 L2A cloud masking, "Sentinel-2 L2A products already include a cloud mask (in the SCL file)..."
• Cloud masks (CLM) and cloud probabilities (CLP) [files?] can be rquested from the Sentinel Hub.
• This SCP instructional video shows at timestamp 7:10 that L1C downloads come with a MSK_CLOUDS_B00.gml vector file that acts as a cloud mask.

Unfortunately, none of my SCP downloads arrive with any such cloud mask files, even though I check the "Ancillary data" option:

The only ancillary files that are downloaded are MTD_TL.xml, and MTDSIL1C.xml (with L1C downloads) or MTD_MSIL2A.xml (with L2A downloads). None of these appear to have any mask information.

QUESTION:

How can I acquire cloud mask files (preferably through SCP)?

Answer 1

I am not familiar with the Semi-Automatic Classification (SCP) plugin, but if you download the archive from the official source, it contains files with image classification (including cloud mask).

Download scene example.

Cloud mask path:

S2B_MSIL2A_20221109T020009_N0400_R017_T52RHP_20221109T034700.SAFE\GRANULE\L2A_T52RHP_A029644_20221109T020011\QI_DATA\MSK_CLDPRB_20m.jp2