error 28000 when deleting cisco vpn

when i try to delete cisco vpn software from my windows xp pro, i get error 28000 saying cannot install before deleting existing is the only vpn on my pc. i tried several times but all in vain.
i went to window registry local machine, then soft and deleted software cisco vpn. but it just can't work.
 any help will be grateful?

Hello alsky95,

I am not sure what registries you are deleting to uninstall the software I suggest that you follow the below article that will give you information on How to Uninstall Manually and Upgrade the Cisco VPN Client that I found on the Cisco Support website:

Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up annd restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (  ) How to back up and restore the registry in Windows


Irfan H, Microsoft Answers Support Engineer

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Question Info

Last updated July 6, 2020 Views 6,116 Applies to: