Boinc was working correctly until recently. Now getting an error message which states "boincmgr.exe-Application error. The application was unable to start correctly (0xc000007b)

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Can you please post a lot more information about your system and what you have done already besides post on this forum?

Like:
BOINC version.
Operating system (which Windows?)
What changed on your system lately? Updates to firewall, AV, other anti-malware software?
Did you run your AV, other anti-malware software?
Did you run a chkdsk on the drive?

By the way, whenever a program doesn't start up, or is refused to be started by the OS, it's hardly the program's fault, but more the OS. You'd then check the error message you get in a search engine. In this case you'd search for 0xc000007b.

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I'm getting the same error message since the latest update to 6.10.60 (x64). Before that I used the previous x64 version.

It only happens when I try to run boincmgr.exe, boinc.exe works fine.

Windows 7 64 (de)
Comodo Firewall
Avira Antivir

Is there a way to download old Boinc versions? The download page only lists some very old ones (2009). I'd like to try the previous version to see if it still works.

By the way, whenever a program doesn't start up, or is refused to be started by the OS, it's hardly the program's fault, but more the OS.

I don't think that's always the case.

I didn't change anything else besides updating Boinc. And that introduced the error.

Is there a way to download old Boinc versions?

See here.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)