Send Exchange Mail Message-The request failed. The request was aborted: Could not create SSL/TLS secure channel

Hi Team,

I am facing issue while sending email through Send Exchange Mail Message.
Previously with same exchange server address its working fine,but now i am getting below error:

Appreciate your help !

Hi Team,

I got the above error when i use update version of Mail activity(UIPath.Mail.Activities).
The workaround is only to downgrade the version?

Appreciate your help!


I have the same problem. Since the new version 2020.4.0

Send Exchange Mail Message : The request failed. Request aborted: Cannot create a secure SSL / TLS channel.

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from what Mail package version have you updated?
The Exchange Server is using TLS 1.0 ?

Hi @studioX @jgabriel3011

i just downgraded the version of UIPath.Mail.Activities to version 1.7.2 and its works fine.

Hello @RajeshT ,

TLS 1.0 and TLS 1.1 were deprecated by Microsoft and many other Software providers will soon follow. More details here
We added TLS 1.2 support in 20.4 and removed support for TLS 1.0 and 1.1. Most likely, your server has not been upgraded yet, hence, the problem.

Further reading here:


Hi @Corneliu_Niculite,

Thank you for the valuable information.
I will check with my Infra team on server update.

Hi @studioX @Corneliu_Niculite,

Is there is any work around,if i am using Studio 20.4 version with TLS 1.0/1.1 still can send messages.

TLS 1.2 not upgraded from our end not sure they dont have any information about this.

I am just worrying if my older version of UIPath Studio will upgrade it wont work for me.

Hi @RajeshT
I am faceing the same problem,Have you got the solution?

Hi @donghai,

Currentlyi am using studio version 2019.11.0 ,which is working.
UIPATH.MAIL.ACTIVITIES ,use version 1.7.2 it should work.

hi @RajeshT
Thanks your reply.
2019.11.0 cann’t active by community :sweat_smile:

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Hi @donghai,

I find only that solution as of now,the current version of community version doesnt support exchange server if the TLS 1.2 not activated.

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hello @RajeshT. We have been doing a series of developments for the Exchange activities. Would you like to try the latest package and tell us if it works? You might need to change how the activity is set up though.

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