Some deployments leave extra Internet cookies that are not referenced by the file index.dat. The extra cookies left in the file system after sustained browsing can lead to profile bloat. Enable this setting to force processing of index.dat and remove the extra cookies. The setting might slightly increase logoff time. Enable this setting only when you experience the issue.
If this setting is not configured here, the value from the .ini file is used.
If this setting is not configured here or in the .ini file, no processing of index.dat takes place.