Notes client LTPA authentication issue after Sametime 12.0.2FP1 upgrade

Vladislav Tatarincev  26 August 2024 08:10:33

We use LTPA Token authentication inside company for HCL Sametime 12.0.2. It was working fine.
When Sametime 12.0.2FP1 arrived we upgraded our Sametime and Notes 14 clients were unable to login with LTPA.  Only regular password login was working.

Sametime Authentication container logs brought us the following:
error: Error decoding LtpaToken2: "error:1C800064:Provider routines::bad decrypt". Trying as v1: false
[2024/08/23 13:39:41] info: ::ffff:172.22.0.8 - -
We opened case and support mentioned that: in HCL Sametime 12.0.2 FP1 we disabled LTPA V1 token support by default - in favor of LTPA V2 which is more secure.
The Embedded clients, especially the 'older' ones still present only the LTPA V1 tokens.

In Domino SSO document, our configuration was LtpaToken and LTPAToken2.

We changed format of token to "LTPAToken2 only" and did restart of Domino and this has resolved issue.


It is also possible to try reenable  LTPATokens1 with following parameter in sametime configuration
File  .env
LTPA_ENABLE_V1_TOKENS=true

Hope this helps someone.

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