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Question/Issue Microsoft JET Database Engine Error: File sharing lock count exceeded 
Answer/Solution SYMPTOMS:
The Event Viewer Application log shows an error from WebWatchBot with a similar description to: "Microsoft JET Database Engine
Error: -2147467259 Msg: Unspecified error Description: File sharing lock count exceeded. Increase MaxLocksPerFile registry entry..."

Using a MS Access database with WebWatchBot, the total number of records in the database exceeds a threshold which causes long running queries to trigger this error.

Follow the instructions to change the registry setting for "MaxLocksPerFile" to 50000. Refer to the Microsoft KB article for complete instructions: 
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