UFT One License Error - BackEndManager.CheckLicense

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Applies to:
UFT One (All Versions)

Issue:

While using or launching UFT one you received "An unexpected error occurred" message:

Clicking on "Detail" provided the following additional information:

"System.InvalidOperationException: The calling thread cannot access this object because a different thread owns it. at HP.QTP.BackEndServices.BackEndManager.CheckLicense..."

The HP.UFT.log within %APPDATA%\Micro Focus\UFT\Logs\ provides additional details:

HP.UFT.License [ 1] ERROR Autopass.IsLicensed failed: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an object.
at com.hp.autopassn.core.AutopassN.generateLockDetectedEvent(Lock argLock)
at com.hp.autopassn.core.AutopassN.getProductFeature(Lock argLock, Int32 argFeatureID, String argFeatureVersion)
at HP.UFT.License.Autopass.AutopassApi.GetProductFeature(Int32 featureId, String featureVersion)
at HP.UFT.License.Autopass.AutopassApi.IsLicensed(Int32 implicitFeatureId)

Cause:

The issue occurs when the following conditions are met:

• UFT One is launched with "Display Add-in Manager on startup" disabled
• The previously used license is no longer considered "available" within AutoPass License Server (APLS) or the APLS server is unavailable

Resolution Steps:

1. Confirm the APLS Server is available
2. Run the Functional Test License Wizard and acquire a valid license
3. Reopen UFT One
4. Enable "Display Add-in Manager on startup" from Tools>Options, close and reopen UFT One.

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