A. 安装arcgis10.2一直说已安装
License Manager卸载了吗？还是没有卸载干净。
ArcGIS软件有个统一的问题，卸载软件如果不把服务停止了就会造成软件卸载不干净。以后卸载软件先把服务停止了就不会有问题了。
这里有个彻底卸载ArcGIS软件的方法，但是如果误删除会造成系统崩溃请慎用！！！
删除一下文件或注册表
文件夹:
C:\Program Files (x86)\ArcGIS
C:\Program Files (x86)\Esri
C:\Program Files (x86)\Common Files\ArcGIS
C:\Program Files (x86)\Common Files\Esri
C:\Program Files\ArcGIS
C:\Program Files\Esri
C:\Program Files\Common Files\ArcGIS
C:\Program Files\Common Files\Esri
C:\Program Data\Esri
C:\Program Data\ArcGIS
C:\Program Data\FLEXnet
C:\Users\<USERNAME>\AppData\Local\ESRI
C:\Users\<USERNAME>\AppData\Local\ArcGIS
C:\Users\<USERNAME>\AppData\Roaming\ESRI
C:\Users\<USERNAME>\AppData\Roaming\ArcGIS
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\ArcGIS
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Esri
注册表：
HKEY_LOCAL_MACHINE\SOFTWARE\ESRI
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ESRI
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Flex LM License Manager
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\<Delete Any Folder that contains ArcGIS or Esri>
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\ArcGIS Server
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\<Delete Any Folder that contains ArcGIS or Esri within>
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\FLEXnet Licensing Service
HKEY_CLASSES_ROOT\Installer\Procts\<Delete Any Folder that contains ArcGIS or Esri within>
HKEY_CLASSES_ROOT\Installer\Assemblies\<Delete Any Folder that contains ArcGIS or Esri within>
HKEY_CLASSES_ROOT\<Delete and Folder that contains ArcGIS or Esri within>
HKEY_CLASSES_ROOT\Installer\Assemblies\Global\<Delete all Keys beginning with ESRI or ArcGIS>
安全设置：
Security Settings -> Local Policies -> Security Options
Locate "User Account Control: Run all administrators in Admin Approval" and change the setting from Enabled to Disabled
Uninstall: C:\Windows\assembly\Esri.* (This can be hundreds of files)
Uninstall: C:\Windows\assembly\ArcGIS.* (This can be hundreds of files) 收起