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Asked: 2026-05-20T13:26:39+00:00

I am attempting to install PostgreSQL 9 (postgresql-9.0.3-1-windows.exe) on my WinXP machine and get

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I am attempting to install PostgreSQL 9 (postgresql-9.0.3-1-windows.exe) on my WinXP machine and get the following error at the start:

Unable to write inside TEMP environment variable path.

Some googling around yielded some advice that suggested Windows Scripting Host might be disabled. I’ve checked and WSH is definitely enabled, so it must be something else. Question is, what?

I can see a file called prerun_checks.vbs is created in %TEMP% and when I try to run this manually, I get the following:

enter image description here

Which looks like a permissions error. However, I am an Admin, and I’ve given myself full control of the temp folder and it’s still not working.

Any help appreciated.

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1 Answer

  1. Editorial Team

    As I was finishing off my question above, our IT chap turned up and knew what the problem was immediately: it’s McAfee. It prevents anything from running in a TEMP folder, including Windows Scripting Host scripts. Disabling McAfee for the duration of the installation fixed the problem for me.

    So if you see this problem, try disabling your anti-virus.

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