打不开SAP，请高手帮忙

应该是有病毒在你的PC里面，杀完毒之后你再试试。
如果有可能做个TRACER跟踪。

CITRIX 的问题吧, 不是SAP的问题, 你们公司应该有Citrix的管理部门, 让他们帮忙解决

Cannot open the Citrix ICA Client. [Error 1000: (no error text available)]Document ID: CTX105226 / Created On: Oct 14, 2004 / Updated On: Jan 19, 2006
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Symptom

Users connecting to an ICA session with the Windows client are unable to connect and receive the following error messages:

“Client Help:

/setup - Register the ICA client with web browser

/? - Client help (this)

filename.ICA - Start ICA Internet client connection to a Citrix MetaFrame server”

The user clicks OK and receives this error message:

“Cannot open the Citrix ICA Client. [Error 1000: (no error text available)]”

General Cause

There may be a process in Task Manager that is causing this symptom. Attempt to terminate any unfamiliar (search Google) or third party executables. Certain processes may restart when attempting to terminate them. The process name can be anything and may change. In addition, if a process successfully terminates, investigate the software associated with said process.

The local machine may have entries in the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Run and RunOnce that start the process. Attempting to remove these entries causes the process to recreate the key.

Resolution 1

This issue is caused by an installed and unidentified virus or spyware application.

To work around this issue, create an account on the local machine with restricted access (for example, a Limited account in Windows XP as opposed to an Administrator or Power User account).

The user is no longer allowed to start the process that causes the issue. When the user logs on, an error message stating the process could not start appears.

Resolution 2

This can also be caused by Norton Internet Security Service and Norton Personal Firewall.

Check the settings for Norton Internet Security Service and Norton Personal Firewall to make sure it is not blocking the default ICA traffic port - 1494.

If disabling Norton Internet Security Service and Norton Personal Firewall solves the issue and there does not seem to be a problem with the settings, the components may be corrupt. Attempt to uninstall and reinstall the components.

Resolution 3

Examine the DWord Value “1004” under the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0

235668
这个出自官方说法
大体意思就是1，有病毒或者木马引起，使用受限用户看一下。
2，有若顿杀毒软件引起，关闭之。
3.往注册表里面改一下
去这个网址看一下：http://203.208.33.101/search?q=cache:VvTVe_eCyZQJ:support.citrix.com/article/CTX105226+citrix+ica+client+error+1000&hl=zh-CN&ct=clnk&cd=1&gl=cn&st_usg=ALhdy28ADXrIYoLi7KBamrFHyAL4X_zcWQ
还有：http://forums.citrix.com/thread.jspa?threadID=35856