After installing hotfix CAPAM_22.214.171.124 I eventually get an empty popup error window when logging in to the PAM Client.
As the window does not provide any information I do not know the cause of the error condition.
If the login operation is retried, it succeeds.
Why do I get a popup error window without any text when trying to login to the PAM Client?
PAM server 3.0.2 with hotfix CAPAM_126.96.36.199 installed.
In fact, the error window appears when any of the provided credentials (username and/or password), or both, are wrong, as it has been always been the case in this situation.
The message is not displayed due to a side effect introduced by hotfix CAPAM_188.8.131.52.
In order to fix it, please, open a support case and request hotfix CAPAM_184.108.40.206 which solves this problem.
CAPAM_220.127.116.11 is not available in the product fixes download page in https://support.ca.com, that is why it has to be explicitly requested opening a case.