Installed the latest version for Windows 7 x64. I can't get BOINC to run now. Everytime I launch BOINC locks up and says, "Communicating with BOINC client. Please wait...."

I have reinstalled several times and went back to old version but it does the same thing.

Any suggestions appreciated! Thanks in advance!

Does the BOINC client start? When checking in Windows task manager, does boinc.exe run?
You can try to uninstall BOINC, then install the newer version. That may also force Windows to re-allow BOINC through its firewall.
If you use another firewall combination, make sure that you allow BOINC through that firewall. Normally done by placing boinc.exe and boincmgr.exe in the DMZ, allowing them to communicate with each other on TCP80/443.

Do you have a lot of work in cache? More than 1,500 tasks?
In that case it's possible that BOINC Manager tries to read them all in, and cannot as it interferes with the real-time update.
In that case, open the Windows registry with regedit.exe, then check that HKEY_CURRENT_USER\Software\Space Sciences Laboratory, U.C. Berkeley\BOINC Manager\Tasks has ActiveTasksOnly set to value 1. If it doesn't, change it to 1. Now restart BOINC Manager.

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Thanks! I am using McAfee and have set it to not filter BOINC but that did not work. I even turned off the firewall with no success.

I then opened the Tasks and set ActiveTasksOnly to 1 with no success.

Which McAfee package do you use? Does it have antivirus included?
What do you mean with 'have set it to not filter BOINC'? Did you add it as an exception or not? And what did you add as an exception?

You'll have to add boinc.exe, boincmgr.exe, boinctray.exe and boinc.scr

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Taurus, you didn't answer whether or not you can see boinc.exe running, using a separate tool like Task Manager. The original problem ("communicating with BOINC Client") can mean there's a problem communicating, as Jord is trying to talk you through: or that there's no client running to be communicated with.

Did you install BOINC while logged in under the same Windows user account as you're now trying to use to run BOINC?

BOINC shows it is running under the Application Tab of task manager. Under the Process Tab, boinc.exe is there. I do not see the Boinc under the Services Tab. In Processes, the BOINC.exe and BOINCMGR.exe is there.

Yes, I install BOINC with the same User account on my Alienware PC.

OK, Jord was on the right lines, then. I'll leave you in his capable hands.

I am using the Verizon Internet Security Suite or VISS. It is based on McAfee and has virus, firewall, and so on. It consists of following:

McAfee Security Center
Build 12.8.903

McAfee Anti-Virus and Anti-Spyware
Build 16.8.708

McAfee Personal Firewall
Build 13.8.718

McAfee Site Advisor
Build 3.6.5.135

McAfee Anti-Spam
Build 13.8.706

McAfee Quick Clean and Shredder
Build 12.8

McAfee Vulnerability Scanner
Build 2.8.716


Under Firewall, there is a Tab called Internet Connections for Programs. I added every BOINC application and provided each with FULL internet access and have NetGuard turned OFF for each program.

To be more specific, the error is labeled at the top of the TAB as "BOINC Manager - Communication".

Under Firewall, there is a Tab called Internet Connections for Programs. I added every BOINC application and provided each with FULL internet access and have NetGuard turned OFF for each program.

To be more specific, the error is labeled at the top of the TAB as "BOINC Manager - Communication".

It isn't an internet connection you're looking for.

It's an internal loopback connection - entirely within your own computer - on IP 127.0.0.1 or "localhost", port 31416.

That's what the BOINC Manager uses to communicate with the (running) BOINC client.

Okay, I pinged 127.0.0.1 and it works fine. What do I need to do to get this to work?

A little understanding on how BOINC its parts communicate between each other. They do this by remote procedure call on TCP port 31416.

So the main parts, boinc.exe and boincmgr.exe need to be enabled through a firewall to communicate with each other on that port.
Separately, boinc.exe needs internet access on TCP ports 80 and 443.

You said you allowed them to be able to get onto the internet. The latter isn't needed, but you must be able to set what ports applications are able to use, or a port-range. Also what they need it for, local network, internet, or just local computer (localhost).

I don't work with VISS, nor with McAfee, so I don't know how to set that up. Probably something like described here, just not for All PCs (but for only this PC?)

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Hi,
i got the same problem @ Win 7 Professional 64bit.

No communication possible. I turned off my firewall completely and deactivated avira free antivirus.
While the error occur, boinc.exe is running.
I installed and started the manager as administrator.

If i run boinc.exe in cmd, it says:
"Unhandled Exception Detected...

- Unhandled Exception Record -
Reason: Access Violation <0xc0000005> at adress 0x0000000140090431 to adress 0x00001000


Any suggestions ?