AppV Client Logging

The App-V client logs information to both the Windows Event log and to a local log file.   Both of these logging options can be adjusted to change the type of information that is captured.   The local file based log can only be accessed by a local administrator of the machine or the SYSTEM account on the machine.

File Log

The local cache is located in profiles \All Users(Public on Vista)\Application Data\Microsoft\Application Virtualization Client\sftlog.txt.  The settings for this file can be modified using the registry at the following location:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SoftGrid\4.5\Configuration

Value	Default	Description
LogFileName	CSIDL_COMMON_APPDATA\Microsoft\Application Virtualization Client\	Client log file. Can be modified to change the log file location. You must restart the sftlist service after changing this value.
LogMinSeverity	4, Informational	Controls which messages are written to the log.  The value indicates a threshold of what is logged – everything at and below that value is logged. For example, a value of 0x3 (Warning) indicates that Warnings (0x3), Errors (0x2), and Critical Errors (0x1) are logged. Value Range: 0x0 == None, 0x1 == Critical, 0x2 == Error, 0x3 == Warning, 0x4 == Information (Default), 0x5 == Verbose
LogRolloverCount	4	Defines the number of backup copies that are kept of the log file, sftlog.txt when it is reset.  The valid range is 0-9999.  The default is 4.  A value of 0 means no copies will be kept.
LogMaxSize	256	Defines the size in megabytes that the log file can reach before being reset.  The default size is 256 MB.  When this size is reached, a log reset will be forced on the next write attempt.

System Event Log Level

The system event logging level can be configured using the App-V Client Management Console by right clicking the root node and going to properties.

Managing the event logging that will be recorded can also be modified by using the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SoftGrid\Client\CurrentVersion\Configuration\

This registry value indicates the logging level at which App-V log messages will get written to the NT event log. The value indicates a threshold of what is logged – everything at and below that value is logged. For example, a value of 0x3 (Warning) indicates that Warnings (0x3), Errors (0x2), and Critical Errors (0x1) are logged.

Value	Default	Recommend Management Server Configuration
SystemEventLogLevel	4 (Information)	·         0 == None ·         1 == Critical ·         2 == Error ·         3 == Warning ·         4 == Information ·         5 == Verbose