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Number crunching :
Avast antivirus - false positive
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Author | Message |
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Send message Joined: 27 Oct 07 Posts: 186 Credit: 3,297,640 RAC: 0 |
One of my machines threw four errors this morning. Turned out that Avast had developed an aversion to 'sixtrack_win32_4517_pni.exe' overnight - an application which we've all been using perfectly happily since May last year, and which no other antivirus program finds any fault with. The problem shows as Exit status -185 (0xffffffffffffff47) ERR_RESULT_START It can be worked round by temporarily disabling Avast's shields while a new copy downloads, and by excluding the BOINC data directory from scanning (Settings - Active protection - File system shield - customise - exclusions, in my copy of Avast Free Antivirus 2015). This is now the third BOINC project which has suffered from a false positive detection by Avast since I installed this version for testing (the other two are Climate Prediction dot Net and GPUGrid) - in all cases, like this one, a detection on a perfectly good file which has already been in use for an extended period. I'll report it myself, but it's reaching the point where BOINC itself should make a protest. |
Send message Joined: 9 Jan 08 Posts: 66 Credit: 727,923 RAC: 0 |
Have the same problem. The boinc client stopped downloading tasks because avast was blocking them, causing both my machines to run dry of work. |
Send message Joined: 28 Sep 04 Posts: 674 Credit: 43,161,498 RAC: 16,051 |
Knocking on wood here... but have finished today several WUs with that application and Avast free version running on the system. Currently running four instances of 32 bit pni application and one instance of 64 bit pni application. No problems so far... |
Send message Joined: 29 Sep 04 Posts: 281 Credit: 11,859,285 RAC: 1 |
I lost 6 WUs to this sudden dislike of lhc. WUs in progress completed successfully but these 6 failed to start and no new ones started as the .exe had been removed and download of a replacement was blocked. In the Exclusions, I put *BOINC* in File Paths and *cern.ch* in URLs. A restart of the host (probably not necessary) and all is well again. Strange that it all worked before then didn't this morning. |
Send message Joined: 9 Jan 08 Posts: 66 Credit: 727,923 RAC: 0 |
making an exception in avast helped me also. Lost 19 WU's on it though, as I wasn't home all day. Atleast it wont be a problem the next time now :) |
Send message Joined: 16 Feb 13 Posts: 1 Credit: 1,784,445 RAC: 4 |
13 work units of type "SixTrack v451.07 (pni)" I received on january 20 and 21 were blocked by Avast antivirus software and therefore causing error in computation. If problems like this will go on, I'll report this (hopefully) false positive detection issue to Avast antivirus as soon as possible. But most of the time my computers are crunching different projects unattendedly, so preventing errors is difficult. Exchanging Avast antivirus software is not an option at the moment. |
Send message Joined: 21 Aug 07 Posts: 46 Credit: 1,503,630 RAC: 0 |
I had a few WU's error out as well. Strangely, I have 4 hosts which run LHC and Avast 2015. But I only had the problems with 2 of them. My newer, Win 7 and Win 8.1 hosts were the ones affected. My older Win XP hosts seem to be immune (at least so far) - maybe just coincidence. |
Send message Joined: 12 Feb 14 Posts: 72 Credit: 4,639,155 RAC: 0 |
Please report the false positive using these instructions on Avast's web site. |
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