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TAPI_E_NOT_INITIALIZED
What TAPI_E_NOT_INITIALIZED means
TAPI_E_NOT_INITIALIZED The TAPI object has not completed the initialization required by the requested method.
What to check
- Identify which object returned the result and the initialization method or activation step it requires.
- Check startup ordering and asynchronous initialization completion.
- Verify that the object was not reused after shutdown or provider reinitialization.
Handling
Complete initialization and reacquire dependent objects if necessary. Fix lifecycle ordering rather than repeatedly invoking the method on the same uninitialized object.
References
- Microsoft: TAPI_E constants — official Microsoft documentation used to interpret the HRESULT.
- Microsoft: TAPI 3.1 Reference
- Microsoft: Telephony API interfaces
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