Hello
One of my BOINC machines is running XP. BOINC version is 7.4.42.

I have downloaded 7.6.22 but when I try to upgrade nothing happens.

I can run any other executable file but not this one.

Any suggestions much appreciated.

Syb

Make sure you downloaded the correct version, that you downloaded it from Berkeley and not elsewhere.

https://boinc.berkeley.edu/dl/boinc_7.6.22_windows_intelx86.exe this one. Download it again, save it to a different directory than you did previously. Wait until the installer has completely downloaded before (double-)clicking the installer's name.

If that still doesn't work, reboot the computer. It may be that your Windows Installer program or service is busy with something. A reboot always clears that up.

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Thanks.

I've done all that several times on the XP machine over the past couple months.

I run BOINC on a Win 10 and Win 7 machine and they have no problems updating.

One thing I haven't done is completely remove BOINC and start over,

Adrianxw is reporting the same thing, also on an XP machine. Although he also says he can install 7.6.6, but not for instance 7.6.9 or 7.6.22.

Can you check if you have installed Windows Installer 4.5 on your system?
Can you install 7.6.6?
What about 7.6.9?

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Yes, I have Win Inst 4.5

I tried 7.6.6 and 7.6.9, neither loaded