Hi,

I am trying to update my version of Boinc but I am always getting this error...

Boinc was installed as a service
Failed to be able to obtain the SID for the selected user on the localhost

Windows 7
Version May 2017

Thanks[/img]

Try using https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed first.
Alternatively, try to reinstall/repair install the version you're trying to uninstall. There wasn't one released in May 2017, not a recommended one and not a test version. But you can navigate to the BOINC data directory (default a hidden directory at C:\Programdata\BOINC\, so fill it in in Windows Explorer and hit Enter), then open the stdoutdae.txt file and check which version it says runs in there: Starting BOINC client version N.N.N for windows_x86_64, what do the N.N.N represent? 7.6.33, 7.7.2, 7.8.0, something else?

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It worked like a charm !!

Thanks for your help !

Hello,

I also have a problem with update/install boinc_7.8.3_windows_x86_64_vbox
I receive following message:

This installation package is not supported by this processor type.
Contact your product vendor

CPU: Xeon E5430
Windows 7

How to fix this?

This message appears if you try to install the 64-bit version of BOINC on a machine running the 32-bit version of Windows 7. Try downloading boinc_7.8.3_windows_intelx86_vbox.exe instead.