Sometimes, applications require specific host file entries. Often you’d probably be able to get around using DNS to resolve the entries the application really needs. But when you can’t, and you want to virtualise your application using AppV 5, it’ll use the hosts file of the OS instead of the hosts file in the virtualized file system.<\/p>\n
To get around this, we can let the AppV client fire off a script to modify the actual OS hosts file upon registration of the AppV application. This is done by modifying the DeploymentConfig.xml file and adding a script to your package, detailed descriptions of how this works can be found here<\/a>. Basically, you add this between the <Machinescripts> tags in the DeploymentConfig.xml file, example:<\/p>\n The VB code\u00a0in hostfile_edit.vbs\u00a0that does the actual work is:<\/p>\n Sometimes, applications require specific host file entries. Often you’d probably be able to get around using DNS to resolve the entries the application really needs. But when you can’t, and you want to virtualise your application using AppV 5, it’ll use the hosts file of the OS instead of the hosts file in the virtualized … Continue reading Changing or virtualizing the Hosts file with AppV 5<\/span> Const ForReading = 1, ForWriting = 2, ForAppending = 8\n Set fso = CreateObject(\"Scripting.FileSystemObject\")\n Set WshShell = CreateObject(\"WScript.Shell\")\n WinDir = WshShell.ExpandEnvironmentStrings(\"%WinDir%\")\n HostsFile = WinDir & \"\\System32\\Drivers\\etc\\Hosts\"\n Set filetxtR = fso.OpenTextFile(HostsFile, ForReading, True)\n DNSEntry1 = \"10.0.0.1 HOSTNAME\u00a0#DESCRIPTION\"<\/pre>\n
If (checkHostfile(filetxtR, DNSEntry1) = True) Then\n WScript.Quit(0)\n Else\n Set filetxtA = fso.OpenTextFile(HostsFile, ForAppending, True)\n filetxtA.WriteLine (DNSEntry1)\n filetxtA.Close\n End If<\/pre>\n
filetxtR.Close\n WScript.Quit(0)<\/pre>\n
Public Function checkHostfile(filetxt, lineToCheckFor)\n checkHostfile = False\n Do Until filetxt.AtEndOfStream\n s = filetxt.readline\n If (s = lineToCheckFor) Then\n checkHostfile = True\n Exit Function\n End If\n Loop\n filetxt.Close\n End Function<\/pre>\n","protected":false},"excerpt":{"rendered":"