Quicken is not designed or tested for use over a network or on a shared drive. Due to the large variety of possible network configurations, Intuit will not be able to offer technical assistance for any problems resulting from use of the Quicken program on a network.
Additionally, Intuit does not recommend the use of your Quicken data files over a network due to the increased likelihood that data corruption will occur. Quicken is designed to save the data incrementally as it is entered. For this reason, network instability or the use of a data file by multiple people at the same time will often lead to data integrity issues.
For optimal results when using Quicken, Intuit recommends installing a separate version of Quicken on each computer's hard drive. To purchase additional copies of the current version of Quicken please visit Quicken.com.