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Objects Are Downloaded When You Use Accelerate Endpoints to Access Them
To access the object but not download it as an attachment, you must bind a custom domain name to the bucket in which the object is stored and resolve the custom domain name to the accelerate endpoint provided by OSS. For more information about how to use custom domain names to access OSS, see Bind accelerate endpoints
Note: Buckets for which transfer acceleration is enabled before 00:00:00 December 15, 2020 are not affected.