Start here: most problems trace to a Windows, Office, or licensing-service change, each with a step-by-step fix below.
An August 2026 (and later) Microsoft 365 update has broke Access. This is unrelated to CETIS.
The only fix as of now is to downgrade to v2605 from July 2026. Before you install a newer version, make sure Microsoft has fully addressed the problem.
An April 2025 (and later) Microsoft 365 update disables ActiveX components, including the TChart plotting control.
Re-enable it in Access: Options → Trust Center → Trust Center Settings → “Prompt me before enabling all controls with minimal restrictions” → OK, then restart.
CETIS relies on the Windows Management Instrumentation (WMI) service to verify the machine; if WMI is disabled, login fails.
Re-enable it: run services.msc, set Windows Management Instrumentation to Automatic, start the service, and restart.
Confirm your administrator allows Trusted Locations for the CETIS directory and that Windows Defender isn’t blocking QlmLicenseWizard.exe.
Legacy issues (Windows XP/Vista/7, Access 2007, graphs32.ocx, workgroup .mdw) are archived; contact support for legacy guidance.
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