Wednesday 15 August 2018

NoClassDefFoundError – com/jacob/com/ComFailException

NoClassDefFoundError – com/jacob/com/ComFailException
No Jacob
The reason for this error is because the Java cache may be interfering with properly finding the Java classes associated with jacob.jar. Clearing the Java cache should fix the problem:
  1. Open up the Control Panel on the end user’s PC
  2. Go to All Control Panel Items and click “Java”
  3. With the General tab highlighted in the Java Control Panel, click “Settings…”Java Control Panel
  4. Click “Delete Files…” to prepare to delete all objects in the Java cache. Delete Temporary Java Files
  5. In the new pop-up window, have only the following selected and click “OK”:
    • Trace and Log Files
    • Cached Applications and Applets
    • Clearing Java cache
  6. After the window closes, click “OK” twice to close all windows in the Java Control Panel.

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