Can't install 2.0 .NET framework

Whenever I try to install the 2.0 update I get the error code: 0x643. Does
anyone know what to do?

Suggestion Pat Walters MSFT:

Please try the following:

Check the My_Computer_Zone has FullTrust permissions enabled:

1. Click Start
2. Click Control Panel
3. Double-click Administrative Tools
4. Click to select the latest version of the Microsoft .NET Framework
Configuration tool.
5. Drill-down to Runtime Security Policy
6. Then Machine
7. Then Code Groups
8. Then Machine
9. Code Groups
10. All_Code
11. Then Right-click on My_Computer_Zone.
12. Click the Permission Set tab
13. Verify and/or change permission set to FullTrust.
14. Reboot the machine
15. Try the installation once more and see if this works for you.


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TaurArian [MS-MVP] 2005-2006
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"CommanderZim" <> wrote in message
news:5467AB6C-914F-4842-8918-...
> Whenever I try to install the 2.0 update I get the error code: 0x643. Does
> anyone know what to do?