# No Common Encryption Algorithm

**URL:** <https://integration.keap.com/t/no-common-encryption-algorithm/56986>\
**Category:** API Q&A\
**Tags:** api\
**Created:** [November 13, 2018, 5:13pm UTC](https://integration.keap.com/t/no-common-encryption-algorithm/56986 "2018-11-13T17:13:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![yugene](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/yugene/32/114_2.png) [@yugene](https://integration.keap.com/u/yugene)\
**Post date:** [November 13, 2018, 5:13pm UTC](https://integration.keap.com/t/no-common-encryption-algorithm/56986/1 "2018-11-13T17:13:05Z")

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Hi,

We’re using XML-RPC API calls to different Infusionsoft accounts. Oddly, only for one of them, this CURL error message started to be returned all the time:  
“Cannot communicate securely with peer: no common encryption algorithm(s).”

Were there any recent updates to the API calls requirements?  
Why would this issue influence one account requests only?

Thanks

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**Author:** ![Todd\_Barsalou](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/todd_barsalou/32/63_2.png) [@Todd\_Barsalou](https://integration.keap.com/u/Todd_Barsalou)\
**Post date:** [November 13, 2018, 5:48pm UTC](https://integration.keap.com/t/no-common-encryption-algorithm/56986/2 "2018-11-13T17:48:30Z")

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Hey! We did update our system to require TLS 1.2 I would check to see if you are using an older version and update it.

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<div class="post-metadata">

**Author:** ![yugene](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/yugene/32/114_2.png) [@yugene](https://integration.keap.com/u/yugene)\
**Post date:** [November 13, 2018, 6:15pm UTC](https://integration.keap.com/t/no-common-encryption-algorithm/56986/3 "2018-11-13T18:15:28Z")

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Thanks,  
yes, adding _-TLSv1.1_ to already disabled v1.0 _-TLSv1_ fixed this issue.

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**Author:** ![yugene](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/yugene/32/114_2.png) [@yugene](https://integration.keap.com/u/yugene)\
**Post date:** [November 20, 2018, 2:16pm UTC](https://integration.keap.com/t/no-common-encryption-algorithm/56986/4 "2018-11-20T14:16:24Z")

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Hm, some time has passed. The same error is still logged occasionally, ~twice per day (roughly less than 1% of all the requests), for different accounts.  
Any idea what may go wrong?  
Thanks!