100 - The upgrade compliance checks could not be performed. Your computer cannot be upgraded.
101 - To upgrade, start the installation from Windows.
102 - The upgrade cannot be started. To upgrade, cancel the installation and then choose to upgrade to a version of Windows that is more recent than the version you are currently running.
103 - You cannot upgrade from %1 to %2. You can upgrade to %3.
104 - Upgrades to this build have been disabled. Try to upgrade to a more recent build.
106 - The upgrade cannot be started because you are running a 64-bit version of Windows and are trying to upgrade to a 32-bit version. Cancel this upgrade and start over with a 64-bit version of Windows.
107 - The partition where you want to upgrade Windows contains more than one operating system. Remove all but one operating system from this partition, and then try upgrading Windows.
108 - Windows cannot determine if another operating system exists on your computer. Try repairing the boot configuration, and then begin the installation again.
109 - There is not enough space to upgrade Windows on partition %1!c!:. You need approximately %2!u! megabytes (MB) of free space to upgrade Windows on this partition. Cancel the installation, free some space on the partition, and then try upgrading again.
110 - There is not enough space on partition %1!c!:. You need approximately %2!u! megabytes (MB) of free space on this partition. Cancel the installation, free some space on the partition, and then try upgrading again.
111 - You cannot upgrade Windows in Safe mode. Cancel the installation, restart your computer in normal mode, and then try upgrading again.
112 - To upgrade Windows, your hard disk partition must be formatted as NTFS. To reformat the partition, cancel the installation, open the Command Prompt window, and then type: convert %1!c!: /fs:ntfs.
113 - The upgrade cannot be started because the content on your installation disc is written in a different language than the language on your computer. To fix this, get an installation disc that uses the same language as your computer.
114 - You need approximately %2!u! megabytes (MB) of free memory to upgrade Windows. Cancel the installation, close any open programs, increase the paging file limit, and then try upgrading again. You can also try installing more random access memory (RAM).
115 - You cannot upgrade from a non-staged build to a staged build.
116 - You cannot upgrade from a staged build to a non-staged build.
117 - The upgrade cannot be started. To upgrade, you must be running a 32-bit version of Windows XP with Service Pack 2 (SP2), or Windows Vista.
118 - The upgrade cannot be started. To upgrade, you must be running Windows Server 2003 with Service Pack 1 (SP1), or Windows Server 2008.
119 - You must rename or remove %1 before upgrade can continue.
120 - Upgrade was blocked via the unattend file. For more details please contact your system administrator.
121 - To upgrade Windows, you must restart your computer, and then run Windows installation again.
122 - Your Windows configuration cannot be upgraded.
123 - You cannot upgrade with multiple users logged on. The other users must log off before upgrade can proceed.
124 - The upgrade cannot be started because you are running a 32-bit version of Windows and are trying to upgrade to a 64-bit version. Cancel this upgrade and start over with a 32-bit version of Windows.
125 - The upgrade cannot be started. To upgrade, you must be running Windows Vista build number %1!u!.%2!u! or higher.
126 - The upgrade cannot be started. To upgrade, you must be running Windows Server 2008 build number %1!u!.%2!u! or higher.
127 - To upgrade you must be running Windows Vista with Service Pack %1!u!. Close Windows installation, open Windows Update, and then check updates for Service Pack %1!u!.
128 - To upgrade you must be running Windows Server 2008 with Service Pack %1!u!. Close Windows installation, open Windows Update, and then check updates for Service Pack %1!u!.
129 - The upgrade cannot be started. To upgrade, you must be running Windows Server 2008 for Itanium-based Systems.
130 Setup has detected special user profiles that may contain encryption keys used by EFS (Encrypting File System). These kinds of profiles cannot be migrated. To avoid potential data loss, see http://go.microsoft.com/fwlink/?LinkId=106115
200 Windows installation encountered an unknown error and cannot continue.
201 The upgrade cannot be started due to compatibility issues.
202 Windows installation cannot continue due to system compatibility issues. To see specific compatibility issues, cancel this installation, and then start the installation process again, using the default options.
1000 Windows XP Starter
1001 Windows XP Home
1002 Windows XP Professional
1003 Windows XP TabletPC
1004 Windows XP Media Center
1005 Windows Vista Starter
1006 Windows Vista Starter N
1007 Windows Vista Home Basic N
1008 Windows Vista Home Basic
1009 Windows Vista Home Premium
1010 Windows Vista Business N
1011 Windows Vista Business
1012 Windows Vista Enterprise
1013 Windows Vista Ultimate
1014 Windows Server 2003 for Small Business Server
1015 Windows Server 2003 Web Edition
1016 Windows Server 2003 Standard Edition
1017 Windows Server 2003 Enterprise Edition
1018 Windows Server 2003 Datacenter Edition
1019 Windows Home Server Basic
1020 Windows Server 2008 for Windows Small Business Server
1021 Windows Small Business Server 2008
1022 Windows Small Business Server 2008
1023 Windows Web Server 2008
1024 Windows Server 2008 HPC Edition
1025 Windows Storage Server 2008 Basic
1026 Windows Unified Data Storage Server 2008 Workgroup
1027 Windows Unified Data Storage Server 2008 Standard
1028 Windows Unified Data Storage Server 2008 Enterprise
1029 Windows Server 2008 Standard (Server Core)
1030 Windows Server 2008 Standard
1031 Windows Server 2008 Enterprise (Server Core)
1032 Windows Server 2008 Enterprise
1033 Windows Server 2008 Datacenter (Server Core)
1034 Windows Server 2008 Datacenter
1035 Windows Server 2008 for Itanium-based Systems (Server Core)
1036 Windows Server 2008 for Itanium-based Systems
1037 Windows XP Home N
1038 Windows XP Professional N
1039 Windows Vista Home Premium N
1040 Windows Vista Enterprise N
1041 Windows Vista Ultimate N
1042 Windows Essential Business Server (Management)
1043 Windows Essential Business Server (Security)
1044 Windows Essential Business Server (Messaging)
1045 Windows Web Server 2008 (Server Core)
1046 Windows Home Server Premium
1047 Windows Server 2008 without Hyper-V for Windows Small Business Server
1048 Windows Server 2008 Standard without Hyper-V (Server Core)
1049 Windows Server 2008 Standard without Hyper-V
1050 Windows Server 2008 Enterprise without Hyper-V (Server Core)
1051 Windows Server 2008 Enterprise without Hyper-V
1052 Windows Server 2008 Datacenter without Hyper-V (Server Core)
1053 Windows Server 2008 Datacenter without Hyper-V