Upgraded Windows Plesk 8.2 to 8.6 due to the statistics.exe processusing 100% CPU for > 12 hours causing the machine it become unresponsive.  The upgrade to Plesk 8.6 went surprisingly well and didn’t fatally break the system.

Two things did happen though:

1/ It reset permissions on custom installed components such as jMail etc.

2/ Statistics.exe appeared to have a bug in it causing it not to run at all.  Event viewer showed:

Error message: Faulting application statistics.exe, version 8.600.0.0, faulting module msvcr80.dll, version 8.0.50727.1433, fault address 0x00008aa0.

Parallels forum post discussed this issue (amoung other issues) and a patch was issued:

URL:

• http://forum.parallels.com/showthread.php?p=348935
• ftp://download1.swsoft.com/Plesk/Autoupdate/Windows/8.6.0/140532/SiteAppStatistics.dll
• ftp://download1.swsoft.com/Plesk/Autoupdate/Windows/8.6.0/140532/statistics.exe

sergius presented the fix:

Gentlemen,

Thank you for the reports.

Please download updated modules SiteAppStatistics.dll, statistics.exe and copy it to %plesk_bin%.
Please backup old modules before copying.

Any feedback is appreciated.

The above patched dll and exe worked for me.