random "Unsupported TLS version. Please use TLS 1.2 or above" errors

Question

Arq (our app) has been getting random "Unsupported TLS version. Please use TLS 1.2 or above" errors. Many requests are successful, but some fail.

Why?

Example: GET https://graph.microsoft.com/v1.0/me/drive/root:/Arq%20Backup%20Data/D296E9E0-55FF-443B-9E29-77FED26C7C78/encryptedkeyset.dat

Response headers:

"Content-Encoding" = gzip;

"Content-Type" = "application/json";

Date = "Tue, 13 Jun 2023 06:48:12 GMT";

"Strict-Transport-Security" = "max-age=31536000";

"Transfer-Encoding" = Identity;

Vary = "Accept-Encoding";

"client-request-id" = "e5ebfbcb-3274-4d8d-8442-e5874e883767";

"request-id" = "bb33a078-d997-4fbf-8424-3e75359106ee";

"x-ms-ags-diagnostic" = "{"ServerInfo":{"DataCenter":"Australia East","Slice":"E","Ring":"5","ScaleUnit":"002","RoleInstance":"SY2PEPF00002014"}}";

Response body:

{"error":{"code":"UnknownError","message":"Unsupported TLS version. Please use TLS 1.2 or above.","innerError":{"date":"2023-06-13T06:48:13","request-id":"bb33a078-d997-4fbf-8424-3e75359106ee","client-request-id":"e5ebfbcb-3274-4d8d-8442-e5874e883767"}}}

Answer 1

For the Authentication errors occur when client doesn't have TLS 1.2 support: please refer this document : https://learn.microsoft.com/en-us/sharepoint/troubleshoot/administration/authentication-errors-tls12-support

For Enabling TLS 1.2 : https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/security/enable-tls-1-2

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".