Fabric Copy Activity from S3 issue: Could not establish trust relationship for the SSL/TLS channel

[cvittori]

Hello,

I'm trying to copy data from an S3 bucket into OneLake using Copy data activity in a data pipeline in Fabric. While configuring the source for the Copy Data activity, I'm using connection type Amazon S3, Connection is established successfully while clicking Test Connection but when trying to browse files from root, nothing gets listed (empty screen). When I enter the bucket name in the File path and choose "Browse from specified path" option, the following error is raised:

"The file operation is failed. A WebException with status TrustFailure was thrown. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. The remote certificate is invalid according to the validation procedure. Activity ID: xxxxx "

Any help??

Thank you!

[frank-panosai]

Here is how you can fix it: As the connection URL use plain https://s3.amazonaws.com

[gpalsson]

This is still a problem in november 2025

*sigh*

[pmedheka]

what was resolution to this issue ?

[pmedheka]

cvittori Did you got any resolution for this issue ? I am also getting same. 

[venkat-subha]

my bucket is public , but still have this issue

[GraceGu]

Can you check required permissions? If permissions are granted, but still hit errors, would you help open a support ticket? 

Thank you!