@Paul Swaray Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
You can disable TLS 1.0 and 1.1 on the storage account. That will apply to connections over the private endpoint as well.
This article explains the supported registry setting information for the Windows implementation of the Transport Layer Security (TLS) protocol
Please let us know if you have any further queries. I’m happy to assist you further.
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