The default Active Directory Services Interface ( ADSI ) duration is two minutes. After that period, ADSI queries will stop responding. This is controlled by the MaxQueryDuration setting. You can use the Ntdsutil.exe utility to increase this duration:
At a command prompt, type ntdsutil then press ENTER.
Once ntdsutil starts, type the following commands within the utility:
Type ldap policies then press ENTER.
Type connections then press ENTER.
Type connect to yourservername then press ENTER.
Type q then press ENTER to exit back to Lightweight Directory Access Protocol (LDAP) policies .
To display current values, type show values then press ENTER.
Type set maxqueryduration to numberofsecondswanted then press ENTER.
Type commit changes then press ENTER.
To display current values, type show values then press ENTER.
Exit by typing q press ENTER and typing q press ENTER.