Several days ago when i install ISA 2004 in SBS 2003 R2 i get the following
error in the
ISAWRAP_*.log file… and installation setup stops"Installer activated,
command-line='/v"/qn FULLPATHANSWERFILE=\"C:\Program
Files\Microsoft Windows Small Business
Running setup wrapper in quiet mode.
Activating firewall installation program
Setup failed. Error returned: 0x643
Firewall installation failed, hr=80070643
Installation completed successfully
ShowSecurePage: Not showing on unattended"


Setup failed. Error returned: 0x643
Firewall installation failed, hr=80070643

Regarding the error 0x643, we have experienced several similar issues
before, on the root of C drive there was a hidden config.msi folder. That
folder was created by a MSI installer for a previous failed installation of
another application. After renaming that folder to config.msi.old, the
installation of ISA was successful. To view hidden folder, please click
Tools->Folder Options, go to the View tab, and then change the option
"Hidden files and folders" to "Show hidden files and folders".

Detailed steps:

1.  Open explorer and navigate to the location of your config.msi folder
(this is a hidden system folder created by the MSI installation, located on
the root of the C: drive by default)

2.  Remove the read-only and system flags from the folder

3.  Rename the folder to config.msi.old

4.  Restart the installation

Meanwhile, please open the Regedit and check the following registry key:
1. Go to the following registry directory

2. On the menu bar, go to Edit, Permissions.

3. Check the existing users to make sure they have Full Control Permission.

4. Add Everyone group and grant Full Control

5. Click Advanced button and check the two check boxes:

"Allow inheritable permission from the parent".
"Replace permission entries on all child objects".

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