Installing the i2050 Software Phone 42Internet Phone User Guide Nortel NetworksTroubleshootingApplication fails to installSymptom: During installation the following error message appears:Error 1931: The Windows Installer service cannot update the system fileDescription: You are trying to install i2050 Software Phone on an outdatedversion of the operating system.Action: To fix the problem, you may have to upgrade your operating system.Check the Hardware and Software Requirements section of this document for theinformation on supported operating system releases.Application fails to connectIf the application fails to connect properly, use the following table to correct theproblem.