The CDFControl utility is an event tracing controller or consumer for capturing Citrix Diagnostic Facility (CDF) trace messages displayed from various Citrix tracing providers. It is intended to troubleshoot complex Citrix-related issues, parse filter support, and collect performance data.
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Start CDFControl and select Options from the Tools menu.
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Specify the trace file path in the Startup trace file path for capturing startup trace section. Then click Save.
- Select the Trace Categories recommended by Citrix Support.
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Select Startup Tracing and select Enable from the Tools menu.
After selecting Enable, the animated bar starts scrolling. This activity does not affect the procedure. Continue to the next step.
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After the Startup Tracing is enabled, close the CDFControl utility and restart the system.
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Start the CDFControl utility. After the system restarts and the error appears, disable startup tracing by selecting Startup Tracing from the Tools menu, and clicking Disable.
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Go to the trace file path specified in step 2 and collect the trace log file (.etl) for analysis.
https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/manage-deployment/collect-cdf.html