I've been running BOINC now for quite some time. I've upgraded BOINC manager (windows_x86_64) from 7.0.25 to 7.0.28. All of the tasks completed and it's waiting to connect to host. When I go into the options tab, there is nothing under connections, Proxy, or SOCKS.... I tried to reinstall with 'repair' and its still the same. What happend? What got dropped?

Thank you.

Hold on, what is the message that you get?
Is it "BOINC Manager cannot connect to a client" or similar?
First check in Windows Task Manager if boinc.exe is even running;
If it is, BOINC Manager cannot make contact with the BOINC program.

BOINC Manager is merely an interface that allows you to control BOINC easier. But to do so, it needs to be able to: a) run and b) contact the BOINC program.

Steps to follow:
You say you upgraded from 7.0.25 --which I assume was working-- to 7.0.28
Is it possible that you got the 32bit version of BOINC before and the 64bit version of it now, or vice versa?

Please check in both C:\Program Files\ and in C:\program Files (x86)\ if you have a BOINC directory there. Please check the name on the BOINC installer that you used. It needs _windows_intel_x86.exe for a 32bit version and _windows_x86_64.exe for the 64bit version.

Now, the BOINC installer checks in the registry where you installed BOINC the last time and it will install the new version to that same place. However, when you install a 64bit program to the C:\Program Files (x86)\ directory, Windows will refuse to run it from there, as as far as it goes, this is the (registered) 32bit ONLY Programs directory.
Similarly, when you install a 32bit program to the C:\Program Files\ directory, Windows may refuse to run this as this is the 64bit Programs directory.

So check first where BOINC was installed to, and if it's the 32 or 64bit version.

Next step:
If that ain't it, and all's fine there, then check that no program is blocking BOINC. It's possible that your firewall stops BOINC all of a sudden, or that you installed BOINC to a different directory and that it therefore is no longer in the exceptions list of your firewall. Do this check also with anti-virus and other (overzealous) anti-malware programs.

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