Forcing a Removal of Client Access

Technote (troubleshooting)


Problem(Abstract)

This document contains instructions for forcing a re-installation or removal of Client Access, Client Access Express, or IBM® iSeries™ Access for Windows.

Resolving the problem

Important Note: These instructions pertain to V5R4 and lower clients only. Your IBM Support Representative will be able to assist with a forced removal of a client at 6.1 and newer. You should contact IBM Support at 1-800-IBM-SERV.

The following are instructions for forcing a re-installation or removal of Client Access, Client Access Express, or IBM iSeries Access for Windows. This problem usually seems to manifest itself when problems arise, such as a PC hangs, has corrupted data, or during a Client Access installation or a service pack installation failure. The same procedure applies to Client Access for Windows 95/NT, Client Access Express, and iSeries Access for Windows with very few changes.

Try to uninstall manually by going to the directory where Client Access, Client Access Express, or iSeries Access is installed (the default is C:\Program Files\IBM\Client Access) and run CWBUNINS.EXE. If Client Access, Client Access Express, or iSeries Access is not in the Add/Remove section, there might also be missing files. However, this might work and it does not take long to try. If this is successful, reboot the PC and continue with a normal installation.

If this does not work, to attempt a removal by registry manipulation, do the following:

Caution: Changes made to the registry can cause serious problems if not done correctly. Ensure you are confident with making changes to the registry before continuing.

Using REGEDIT, go to the key HKEY_LOCAL_MACHINE\SOFTWARE\, look for and delete any of the following folders:

IBM\Client Access
IBM\Personal Communications (if PC5250 is installed)
IBM\NSCMPKG (if PC5250 is installed)
IBM\Trace Facility (if PC5250 is installed)
NetSoft\NS Elite (if NetSoft Router is installed)

Continuing in REGEDIT, go to the key HKEY_CURRENT_USER\SOFTWARE\, look for and delete any of the following folders:

IBM\Client Access
NetSoft\NS Elite (if NetSoft Router is installed)

Finally in REGEDIT, go to the keys HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ and \RunOnce. Remove any entries that reference Client Access in the data field.


Note: Depending on which Client Access Client, Version, and components are installed, you might not see all of the registry entries listed above. Delete the ones that you do see and move on with the instructions. When removing from Win64Bit OSes check also in registry under:HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\IBM

You are now finished in REGEDIT and can close the screen, which saves the changes that were just made.

Then do the following:
1. Install Client Access, Client Access Express, or iSeries Access again (reloads any missing files).
2. Uninstall Client Access, Client Access Express, or iSeries Access (through the Add/Remove Programs ICON in the Control Panel).
3. Reboot. (The locked files get deleted after rebooting.)
4. Install Client Access, Client Access Express, or iSeries Access again.

Historical Number

25681628

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Document information


More support for:

IBM i
Access for Windows

Software version:

4.4.0, 4.5.0, 5.1.0, 5.2.0, 5.3.0, 5.4.0

Operating system(s):

IBM i

Reference #:

N1017131

Modified date:

2012-09-04

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