Thanks Ronni now installs after I cleared files to allow the installation
Regards Bill

On Tue, Apr 21, 2020 at 10:23 AM Ronni Brown <[email protected]> wrote:

> Hi Bill,
>
> Try installing the Combo Update.
> If you are running the 10.15.3 and need to update to the 10.15.4 you can
> download directly the Combo update macOS 10.15.4
> https://support.apple.com/kb/DL2037?locale=en_US
>
> Kind Regards,
>
> Ronni
>
>
>  Ronni Brown’s iPad Pro 12.9-inch 256GB
>
>
> On 21 Apr 2020, at 7:18 am, Juliet Kitson <[email protected]> wrote:
>
> 
> Hello
> I have a MacBook Air late 2013 running Catalina 10.15.3 I get a message an
> update is available so I check and sure enough 10.15.4 is there so I update
> takes about 15 minutes then when I restart I still have 10.15.3 any
> suggestions will be grateful accepted.
> Regards Bill
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