Forum Discussion
SSL_ERR_CREDENTIAL_PROMPT_FAILED_WITH_CO_E_SERVER_EXEC_FAILURE (15623)
Need help with the following issues on AVD. What could be causing these issues?? My users seem to get the error when they try to sign on.
The error SSL_ERR_CREDENTIAL_PROMPT_FAILED_WITH_CO_E_SERVER_EXEC_FAILURE (15623) encountered in Azure Virtual Desktop (AVD) is generally indicative of a failure in the credential prompt process during user authentication. It may be a chance that the problem was introduced by certain Windows security updates, which interfere with the Remote Desktop credential handling mechanism.
https://learn.microsoft.com/en-us/answers/questions/5677074/login-issue-in-avd
https://simplysecuregroup.com/microsoft-january-2026-security-update-causes-credential-prompt-failures-in-remote-desktop-connections/