Complete deinstallation of STEP 7 including all software packages
QUESTION:
问题：
How can I completely deinstall STEP 7?
如何安装卸载STEP7？
ANSWER:回答
It is principally recommended to deinstall the complete Siemens-Software and to reinstall it after the deinstallation of step 7.
The following text describes the procedure.
下面的文本将教会如何重新安装STEP7

Warning:警告
In the deinstallation described the complete SIEMENS folder and all Registry entries of the Siemens software installed on your computer are deleted. If this folder still contains projects, then you must copy them to another directory using the SIMATIC Manager function "File > Save As&". You can also save the data in another directory or on a different drive using the function "File > Archive". Do not copy or move the projects using the Windows Explorer. Still save your GSD files from the directory "<>\Siemens\Step7\S7data\gsd\".
Important:
在卸载重新安装STEP7，要修改注册表，请注意检测你原来的工程项目，把他转移到其他的非默认的保存路径下，在卸载前，请保存好你的GSD文件。
First transfer your authorizations to the authorization floppy disk provided for this.
Start the "Software" via "Start > Settings > Control Panel" and deinstall all the SIMATIC applications.
Then restart the PG / PC.
首先进入控制面板，卸载STEP7，然后重启PC
Start the Registry editor via the menu command "Start > Run".
运行注册表编辑器

Enter "regedit" and acknowledge with "OK". The Registry editor now starts.
Open the directory "HKEY_CURRENT_USER > Software". There you will find the "SIEMENS" subdirectory.
打开"HKEY_CURRENT_USER > Software"找到"SIEMENS"目录，选择并删除。

Select this directory and delete it.
Open the directory "HKEY_LOCAL_MACHINE > SOFTWARE". In it you will find another "SIEMENS" directory.
打开"HKEY_LOCAL_MACHINE > SOFTWARE"，找到"SIEMENS"目录，选择并删除。

Select this directory too and delete it. Then the Registry is free of all SIEMENS entries.
Close the Registry editor and then delete the complete Siemens directory (<>\Siemens) as well as all the S7 files in the Windows system directory. For this you open the Search mask via "Start > Search > Files/Folders..." and search for all the "S7*.*" files.
关闭注册表，删除Siemens目录下的所有S7文件，利用“搜索”功能，查找“S7*.*”文件夹，然后删除。
Delete the SIMATIC folder in the start menu.
在启动参数中删除SIMATIC文件夹
Delete the data file "simatic.cfg", located in the Windows-directory (e.g. C:\WinNT oder C.\Win98).
删除数据文件"simatic.cfg"，在Windows目录下查找。
Note:
With new operating systems it might be the case, that this file is already no longer there.
Delete the data files C:\RASETU*.*
删除“C:\RASETU*.*”所有文件。
Search the data file "citamis.str" via "Start>Search>Files/Folders in the windows directory (e.g. C:\WinNT C.\Win98) and delete this file
利用查找功能，查找到"citamis.str"文件，并删除。
Additionally, empty the recycle bin.
删除安装目录下的BIN文件夹。
The deinstallation has been completed then.
Keywords:
Deinstallation




必要时找到HEEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\CONTROL\SESSION MANAGE下的PendingFileRemameOpeaations键，查看该键，将该键所指向的目录文件删除，然后删除该键，不要重新启动，继续你的软件安装。