Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.
The MaxQueryExecutionTime entry is the maximum amount of execution time allowed for a query.
|Units:||Milliseconds of CPU time|
|Default:||10000 (10 seconds)|
|Range:||0 - 4294967295 (0xFFFFFFFF)|
If a query takes more CPU time than specified by the value of the MaxQueryExecutionTime entry, processing of the query stops and an error status is returned. The value of zero specifies either that there is no limit for Indexing Service processing or that the client specifies the limit.