Crystalras.exe consuming 100% CPU usage

Hi everyone,
When we try to open an instance of one of our Crystal reports from InfoView, the crystalras.exe process runs at 100% CPU usage and the report never shows up. After a few minutes, we get the following message:
The request timed out because there has been no reply from the server for 600,000 milliseconds.
Does anyone know where the problem could come from? Could this be because the report is retrieving too much data?
Thanks in advance for any help.

Dear Both,
I traced the RAS server as suggested by Tim and obtained a log that - I have to admit - is quite difficult for me to understand. Could I send it to one of you for examination? Thanks in advance.
Ted, please find below my answers to your questions:
Just to close out possible data source issues, are the reports going against Business Views or Universes?
The report is based on Business Views.
Do you have Processing Extensions specified for the reports?
Sorry but what are Processing Extensions?
Also, when you checked in the Crystal Reports Designer, was it Designer installed on the same machine where the page server and RAS server is running?
Yes, it is installed on the same machine.
Also, since it affects both Page Server and RAS, it may require CRPE traces to get to the bottom of this (CRPE - 'creepy' - is the CR engine used by both the Page and RAS server).
I will certainly open a case with SAP to have them help me on that.
Thank you both for your help. It is very appreciated.

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Oracle.exe consuming 100% CPU on windows and database hang

Hi all,
every time my oracle database is hanging when the application run, the problem is the oracle.exe consum 100% CPU but not memory and the server hang and the dabase is going to inaccessible, we need to restart oracle instance service or server to bring the databas eback to normal but it's not permanent because the problem occurs once the application turn on.
Checking the log file i found the below error every time:
My database version is 9.2.0.7.0
OS: Windows 2003 Server Standard Edition Service Pack 2
RAM: 3,5Gb
CPU: Inte Xeon 3.20 GHz
ORA-00600: internal error code, arguments: [kghuclientasp_03], [0xBFEADCE0], [0], [0], [0], [], [], []
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ORA-06512: at line 1
Fri Mar 05 05:35:15 2010
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Thank you
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Is this a new application on this database?
Has it run well in the past?
I have had this happen before on a 32bit Windows server. Our problem was a poorly written procedure that kept pegging the cpu to 100%. You should be able to figure out what SQL is being used that is causing this problem, it will be the Top Working SQL most likely.
I also had this problem on a Logical Standby server which was trying to apply SQL to the SYS.AUD$ table. As soon as SQL Apply was started, the CPU went to 100%. Once I truncated that table, the cpu usage went back to normal. Not sure what you are using to monitor your database but if you can, try to find out what SQL is running when your CPU goes to 100%.

Explorer.exe consuming 100% CPU after resuming from hibernation

Hello,
For the last months, I repeatedly have the problem that sometimes (every 2nd or 3rd time) after resuming from hibernation, in a few cases also after disconnecting from the Internet, one or more instances of explorer.exe are consuming 100% CPU, but never
the shell instance.
I tried figuring out what it was doing, but I was unsuccessful so far.
Here is a stack of the thread which consumed most of the CPU:
0, ntoskrnl.exe!KiDeliverApc+0x166
1, ntoskrnl.exe!KiSwapThread+0x31f
2, ntoskrnl.exe!KiCommitThreadWait+0x129
3, ntoskrnl.exe!ExpWaitForResource+0x29f
4, ntoskrnl.exe!ExEnterPriorityRegionAndAcquireResourceExclusive+0x1ad
5, win32k.sys!EnterCritAvoidingDitHitTestHazard+0x13
6, win32k.sys!NtUserMessageCall+0x28
7, ntoskrnl.exe!KiSystemServiceCopyEnd+0x13
8, user32.dll!NtUserMessageCall+0xa
9, user32.dll!SendMessageWorker+0x168
10, user32.dll!SendMessageW+0xfb
11, ExplorerFrame.dll!CNscTree::_TreeInvalidateItemInfo+0xd0
12, ExplorerFrame.dll!CNscTree::_EnumBackgroundDone+0xb4a14
13, ExplorerFrame.dll!CNscTree::OnQIUpdateEnumDone+0x93
14, ExplorerFrame.dll!CNscEnumQueueItem::Dispatch+0xcf
15, ExplorerFrame.dll!CTaskLock::DispatchQueueItem+0xc5
16, ExplorerFrame.dll!CNscTree::_SubClassTreeWndProc+0x118
17, ExplorerFrame.dll!CNscTree::s_SubClassTreeWndProc+0x5f
18, comctl32.dll!CallNextSubclassProc+0xe0
19, comctl32.dll!MasterSubclassProc+0xa2
20, user32.dll!UserCallWinProcCheckWow+0x149
21, user32.dll!DispatchMessageWorker+0x1a7
22, AppVEntSubsystems64.dll!VirtualizeCurrentThread+0x1e492
23, ExplorerFrame.dll!CExplorerFrame::FrameMessagePump+0xe3
24, ExplorerFrame.dll!BrowserThreadProc+0x5e
25, ExplorerFrame.dll!BrowserNewThreadProc+0x3a
26, ExplorerFrame.dll!CExplorerTask::InternalResumeRT+0x12
27, ExplorerFrame.dll!CRunnableTask::Run+0x114
28, shell32.dll!CShellTaskThread::ThreadProc+0x2a3
29, shell32.dll!CShellTaskThread::s_ThreadProc+0x2f
30, SHCore.dll!StrRetToBSTR+0x19f
31, kernel32.dll!BaseThreadInitThunk+0x22
32, ntdll.dll!RtlUserThreadStart+0x34
I was hoping I could identify a rogue shell extension or something similar, but I didn't find any such evidence so far.
In case you need this information, this is a list of my shell extensions/copy hooks/context menu handlers/drag&drop handlers (without duplicates):
+ " SkyDrivePro1 (ErrorConflict)" "Microsoft OneDrive for Business Extensions" "Microsoft Corporation" "c:\program files\microsoft office 15\root\vfs\programfilesx64\microsoft office\office15\grooveex.dll" "12.11.2014 01:13"
+ "{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}" "" "Apache Software Foundation" "c:\program files (x86)\openoffice 4\program\shlxthdl\shlxthdl.dll" "20.09.2013 12:50"
+ "{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}" "" "Apache Software Foundation" "c:\program files (x86)\openoffice 4\program\shlxthdl\shlxthdl_x64.dll" "20.09.2013 12:41"
+ "7-Zip" "7-Zip Shell Extension" "Igor Pavlov" "c:\program files\7-zip\7-zip32.dll" "18.04.2011 19:34"
+ "7-Zip" "7-Zip Shell Extension" "Igor Pavlov" "c:\program files\7-zip\7-zip.dll" "18.04.2011 19:35"
+ "ANotepad++64" "ShellHandler for Notepad++ (64 bit)" "" "c:\program files (x86)\notepad++\nppshell_06.dll" "12.05.2014 10:49"
+ "Ath_CopyHook" "Bluetooth File Transfer Plugin" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\folderviewimpl.dll" "25.09.2013 10:58"
+ "Atheros" "Atheros Bluetooth Module" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\btvappext.dll" "25.09.2013 10:58"
+ "DropboxExt" "Dropbox Shell Extension" "Dropbox, Inc." "c:\users\david\appdata\roaming\dropbox\bin\dropboxext64.24.dll" "24.06.2014 01:32"
+ "DropboxExt1" "Dropbox Shell Extension" "Dropbox, Inc." "c:\users\david\appdata\roaming\dropbox\bin\dropboxext.24.dll" "24.06.2014 01:31"
+ "FTShellContext" "Atheros Bluetooth Module" "Qualcomm®Atheros®" "c:\program files (x86)\bluetooth suite\shellcontextext.dll" "25.09.2013 10:58"
+ "GDContextMenu" "Google Drive shell extension" "Google" "c:\program files (x86)\google\drive\contextmenu64.dll" "16.01.2015 01:57"
+ "GDriveBlacklistedOverlay" "Google Drive shell extension" "Google" "c:\program files (x86)\google\drive\googledrivesync64.dll" "16.01.2015 01:56"
+ "igfxcui" "igfxpph Module" "Intel Corporation" "c:\windows\system32\igfxpph.dll" "09.09.2013 18:26"
+ "LockHunterShellExt" "LockHunter Explorer Extension" "Crystal Rich Ltd" "c:\program files\lockhunter\lhshellext32.dll" "25.03.2009 08:53"
+ "LockHunterShellExt" "LockHunter Explorer Extension" "Crystal Rich Ltd" "c:\program files\lockhunter\lhshellext64.dll" "28.04.2009 10:21"
+ "PDF Shell Extension" "PDF Shell Extension" "Adobe Systems, Inc." "c:\program files (x86)\common files\adobe\acrobat\activex\pdfshell.dll" "11.05.2013 10:34"
+ "PushbulletCtx" "" "" "File not found: :/Program Files (x86)/Pushbullet/pushbullet_ctx.DLL" ""
+ "RecuvaShellExt" "Recuva shell extensions" "Piriform Ltd" "c:\program files\recuva\recuvashell64.dll" "14.03.2014 12:41"
+ "SD360" "360 Total Security" "" "c:\program files (x86)\360\total security\menuex64.dll" "12.01.2015 03:55"
+ "SourceGearDiffMergeShellExtension32" "SourceGear DiffMerge ShellExtension 32" "SourceGear LLC" "c:\program files (x86)\sourcegear\common\diffmerge\sourcegeardiffmergeshellextension32.dll" "23.10.2013 19:15"
+ "SourceGearDiffMergeShellExtension64" "SourceGear DiffMerge ShellExtension 64" "SourceGear LLC" "c:\program files\sourcegear\common\diffmerge\sourcegeardiffmergeshellextension64.dll" "23.10.2013 19:17"
+ "StartMenuExt" "Start Menu Helper Extension" "IvoSoft" "c:\windows\syswow64\startmenuhelper32.dll" "20.04.2014 18:17"
+ "StartMenuExt" "Start Menu Helper Extension" "IvoSoft" "c:\windows\system32\startmenuhelper64.dll" "20.04.2014 18:16"
+ "WinRAR32" "WinRAR shell extension" "Alexander Roshal" "c:\program files\winrar\rarext32.dll" "02.12.2014 11:07"
+ "WinRAR" "WinRAR shell extension" "Alexander Roshal" "c:\program files\winrar\rarext.dll" "02.12.2014 11:07"
+ "WinSCPCopyHook" "Drag&Drop shell extension for WinSCP (64-bit)" "Martin Prikryl" "c:\program files (x86)\winscp\dragext64.dll" "14.08.2013 12:22"
I you have any clue what might be going, I would be very happy to hear it. It's really annoying, as I have to kill explorer.exe and thereby close all my folder windows when this happens.
Thank you!
Best regards,
David Trapp

Hello,
thanks for having a look. However, I already ran SFC before posting on this forum (as part of my own investigation) and it came back clean. RescueTime (a time tracking tool) is probably not the culprit because it happened also several times in the past without
RescueTime being running (that was because I had accidentally removed it from autorun at that time).
Unfortunately, I can't follow your "invalid date" explanation. I don't think an "invalid date" is anywhere involved; in fact, the method in question is called "_TreeInvalidateItemInfo" and not "_TreeInvalidDateItemInfo"
(note that there is only one "d"), so I assume its job is just to invalidate (and in turn, refresh) the cached information about nodes in the left pane's folder tree of the explorer window(s) - since the folder tree is the only NamespaceTreeControl
(whose corresponding class name is CNscTree) in explorer folder view windows. As I see it, something is causing explorer to repeatedly refresh the folder tree data, but I am stuck at finding out what exactly.
Best regards,
David Trapp
EDIT: Disassembling ExplorerFrame!CNscTree::_TreeInvalidateItemInfo confirms that, because it seems to call TreeView_SetItem for a tree node and its parent (possibly with all fields set to *_CALLBACK), and CNscTree::_UpdateItemDisplayInfo
for the parent node.
EDIT2: I'd love to dig more into the trace, however I am hitting a wall at function names/addresses. Everywhere where I would expect a function name/address (such as the "by stack" views), I only see question marks instead. What
could be the reason?

MobileClient.exe holds 100% CPU usage in Citrix

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Another question:
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Client process (uniengd) on the Calendar server is consuming 100% CPU usage

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The patch for these bits is available via the Smart Update (Windows and Mac) web
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http://home.netscape.com/smartupdate/su1_40.html
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http://home.netscape.com/download/selectplatform_1_361.html

For Unix platforms, you will need to download the compressed tar file
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 Mac platform
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 Unix platform
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<OL>
<LI>Using your favorite monitoring tool on the server, note the PID
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Hi TrondWH,
Thanks for contacting Microsoft.
Currently, would you please try cleaning boot the server and test how the issue goes. Cleaning boot can exclude some third-party application affect. Following are the detailed steps about clean boot:
Log on to the computer by using an account that has administrator rights.
Click Start, type msconfig.exe in the Start Search box, and then press ENTER to start the
 System Configuration Utility.
On the General tab, click Selective Startup, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
Click OK, Choose Don’t show this message again and then click Restart.
Please check if the issue is still the same.
Please let me know the result.
Best regards,
Sophia Sun
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Microsoft.Exchange.AddressBook.Service.exe 100% CPU Usage

Hi,
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the high CPU Usage of the above .exe.
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Hi
Microsoft.Exchange.AddressBook.Service.exe is related to OAB function.
Maybe mobile or client fails to download will cause this problem.
What was the fix for this?

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We are using SAP BI 4.0 sp6 windows for our BO Application.From last week onwards we are experiencing system freeze as the WIreportserver.exe consuming 100% cpu.we have to manually kill it to make the system work again.Even restarting the servers doesn't help!
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You can find Python code to reproduce this issue here:
https://gist.github.com/snaury/027a3c546f5b0a62a440
Sorry for using Python and not e.g. C++, but it's a lot shorter that way.

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thanks
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Oracle.exe is consuming 100% cpu o windows

Hi,
We have 6 oracle 10g database on windows box and from task manager we are able to see oracle.exe is consuming 100% cpu
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Thanks

On my Vista PC, I find that the easiest way to identify which instance an oracle.exe is, is the task manager. On the Processes tab, right-click the oracle.exe and then click Go To Service(s) and that takes me to the OracleServiceORCL or whichever insance it is.
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We are experiencing issues with the built in search in WS 2012R2 (Win+Q). Upon starting to type, the explorer.exe process peaks and stays at 100% until typing is done and the search is complete. It also can't keep up with typing and hangs after
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Hi TrondWH,
Thanks for contacting Microsoft.
Currently, would you please try cleaning boot the server and test how the issue goes. Cleaning boot can exclude some third-party application affect. Following are the detailed steps about clean boot:
Log on to the computer by using an account that has administrator rights.
Click Start, type msconfig.exe in the Start Search box, and then press ENTER to start the
System Configuration Utility.
On the General tab, click Selective Startup, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
Click OK, Choose Don’t show this message again and then click Restart.
Please check if the issue is still the same.
Please let me know the result.
Best regards,
Sophia Sun
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

T41---process rundll32.exe occupied 100% cpu usage and caused slow performance.

hi i have a big problem whit the performance of my laptop. I bought a extra 4gb ram for the second slot that not exist; and still continuos getting my cpu usage at 100% whit 2 programs running like office and google crhome.
i have this specf of my latop:
- procesor: amd c-60 apu whit radeon hd graphics 1,00 ghz
- ram: 4gz
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winows 7 ultimate
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tks

Rundll32.exe Using High CPU on Windows 8.1
I use a Lenovo T440s laptop for my service calls and when I need to do work remotely. My laptop runs Windows 8.1 Professional. I love this laptop and it has proved to be tough as well as extremely fast. I noticed a couple weeks ago that my battery was going dead after about an hour of usage. I also noticed that my cooling fan in the laptop was running louder than normal. I decided to open Task Manger on my laptop to see what the issue was. I soon noticed that a process called rundll32.exe was using around 25 percent of my CPU. I killed the process and everything returned to normal.
A few days later, my battery was going dead very rapidly. My cooling fan was on almost constantly and was blowing warm air. I opened Task Manger and sure enough, rundll32.exe was using 25% of my CPU again. I killed the process and everything was fine. It wasn’t long and my laptop was doing the exact same thing as I described before. I decided it was time to get to the bottom of this issue. Here is how I troubleshot what program was using the rundll32.exe and in the process was killing my battery.
Step One: I downloaded Process Explorer. This is an excellent tool. It is similar to Task Manager but goes into way more depth on the processes and dlls that are running. I extracted the download and then ran Process Explorer as an administrator.
Step Two: One of the first things I noticed was rundll32.exe was using 23 percent of my CPU again.
I right-clicked on the rundll32.exe process and selected properties. I clicked on the Image tab and at once saw the culprit. A utility to monitor and gauge my battery usage, called PwrMgrBkGndMonitor, was draining my battery instead of saving it.
Step Three: After a little digging around in my installed programs I located a program called Lenovo Settings Dependency Package. PwrMgrBkGndMonitor was installed in the Lenovo Settings Dependency Package.
I didn’t use this program and decided I didn’t need it. I uninstalled the program and restarted my laptop. I haven’t had a problem with the rundll32.exe using up my CPU since I uninstalled Lenovo Settings Dependency Package.
If you are experiencing the same symptoms has stated above and you are running a Lenovo laptop with Windows 8.1, this may be your issue. However, before you uninstall the program I would recommend using Process Explorer. Process Explorer will help you determine the exact program that is giving you issues before blindly uninstalling and killing services. I hope my troubleshooting steps can help you find program is making rundll32.exe use high CPU usage. Let me know in the comments if this helped you!
Source: techspeeder.com

After starting up the listener the server consuming 100% CPU

Hi,
when i startup the database tier (EBS 12.1.3 and DB 11.2.0.2) its stared well and the CPU usage is normal.But when i start the listener the server (RHEL 5.8) start consuming 100% CPU.
alert.log details
in file /ebs/UAT/bin/db/tech_st/11.2.0/admin/UAT_dcvlodbdev/diag/rdbms/uat/UAT/trace/UAT_j000_7601.trc:
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Use ADRCI or Support Workbench to package the incident.
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ORA-00600: internal error code, arguments: [13011], [262414], [1644193998], [33], [1644194002], [0], [], [], [], [], [], []
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Incident details in: /ebs/UAT/bin/db/tech_st/11.2.0/admin/UAT_dcvlodbdev/diag/rdbms/uat/UAT/incident/incdir_481092/UAT_ora_7814_i481092.trc
Wed Dec 12 10:14:23 2012
Dumping diagnostic data in directory=[cdmp_20121212101423], requested by (instance=1, osid=7814), summary=[incident=481092].
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Wed Dec 12 10:14:24 2012
Sweep [inc][481092]: completed
Sweep [inc2][481092]: completed
Wed Dec 12 10:16:50 2012
Errors in file /ebs/UAT/bin/db/tech_st/11.2.0/admin/UAT_dcvlodbdev/diag/rdbms/uat/UAT/trace/UAT_j001_8058.trc (incident=481492):
ORA-00600: internal error code, arguments: [13011], [262414], [1644193998], [33], [1644194002], [0], [], [], [], [], [], []
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Errors in file /ebs/UAT/bin/db/tech_st/11.2.0/admin/UAT_dcvlodbdev/diag/rdbms/uat/UAT/trace/UAT_j001_8058.trc:
ORA-00600: internal error code, arguments: [13011], [262414], [1644193998], [33], [1644194002], [0], [], [], [], [], [], []
ORA-06512: at "APPS.WF_BES_CLEANUP", line 488
ORA-06512: at line 1
Wed Dec 12 10:19:04 2012
Incremental checkpoint up to RBA [0xf.ac257.0], current log tail at RBA [0xf.c3691.0]
Wed Dec 12 10:20:56 2012
Active Session History (ASH) performed an emergency flush. This may mean that ASH is undersized. If emergency flushes are a recurring issue, you may consider increasing ASH size by setting the value of ASHSIZE to a sufficiently large value. Currently, ASH size is 2097152 bytes. Both ASH size and the total number of emergency flushes since instance startup can be monitored by running the following query:
select total_size,awr_flush_emergency_count from v$ash_info;
Wed Dec 12 10:21:26 2012
Sweep [inc][481492]: completed

Please see these docs.
ORA-600/ORA-7445/ORA-700 Error Look-up Tool [ID 153788.1]
ORA-600 [13011] "Problem occurred when trying to delete a row" [ID 28184.1]
Workflow Control Queue Clean Up Program Fails With ORA-25226 [ID 334237.1]
Thanks,
Hussein

[10.1.2] Protected Mode causing 100% CPU Usage/Extra Processes on Win XP 32-bit?

Hello,
I'm not 100% sure if the two are related, but I have a client who was seeing 100% CPU usage using Adobe Acrobat Reader X 10.1.2 on Windows XP 32-bit and Firefox 11. The acrord32.exe process would hang around after closing the main window and eventually leading to tons of processes and his CPU at 100% use. I believe disabling Protected Mode may have solved this issue. I didn't see it documented anywhere so I figure I'd post about it here and see if anyone else was seeing this resolved as well.

I noticed 'only' 50 % CPU usage. Not during Reader usage with ~ 20 %, but it started after closing main window.
Two instances of acrord32.exe were created - the moment pdf was opened - of which one was using zero CPU.
After opening another pdf, 2 more processes were created, so 4 in total. Have seen 2 of them using 100 %.
Issue is easily recreated.
This is all in 10.1.3, no fix from Adobe, only THE fix from you: turning of Protected Mode!
After which now only one proces is created, with 1 to 3 pdf documents opened at same time.
This instance is then nicely shutdown after the last pfd is closed.

Recently FireFox often has been causing 100% CPU usage and locks up until it finishes the process (various ones). Clearing cookies/cache didn't help. Any ideas?

Windows 2000 SP4, 1g RAM, Firefox 9.0.1
We keep IE6 and Firefox open simultaneously for 2 different mail accounts. Firefox was always much faster even with 3 or 4 tabs open, but for the past couple of weeks when trying to update a screen the CPU suddenly goes to 100% usage and of course nothing will move until the particular process is finished. Closing one or more tabs does not help. If I close Firefox completely with Task Manager CPU usage goes back down to nil. After restarting Firefox CPU usage may or may not go back up depending upon whether it tries to continue the previous task that was locking it up.
It did not do this with Firefox 3.6 but then again it didn't happen immediately after updating to 9.0.1 either.

100% CPU usage occurred most often toward the end of the working day when busy trying to print on-line postage. We don't have any memory-consuming plugins but according to the knowledge base articles Firefox memory usage can gradually increase during the day even if you do nothing. It seems that may be the problem so we close and restart Firefox more often now as that usually fixes the problem. However, if we get stuck on a particular website update that causes the CPU to to go 100%, we can always start Firefox without previous tabs so the update will stop, or simply use a different browser until we have time to let the computer play games with itself.
So our workaround of restarting Firefox turns out to be the final solution (until we find something better - will post it if we do). Vic

Server 2012R2 Windows backup 100% CPU usage and no backup

Hello!
I have a problem with two VM´s on a HP Proliant ML350p Gen8, that has Windows Server 2012R2 operating system with Hyper-V role installed.
Both VM´s are also 2012R2, one is DC/DNS/FILE/PRINT and the other one is Exchange 2013.
The problem itself is that, when Windows backup (wbengine.exe - Block level backup engine service) inside VM starts, it uses almost maximum CPU resource, so the VM´s CPUs are 100% used. Backup itself is not working, there is no network trafic. Only
way to get rid of 100% CPU usage is to restart the server.
When i start backup manually (Backup once - scheduled backup options), it is working and the CPU usage is around 20-30%.
One VM (DC/DNS/FILE/PRINT) has 2x vCPU and Exchange has 4x vCPU.
The problem started suddenly, the backup were performing slowly and failed.
Backups are scheduled on different time. Host level Hyper-V backup of VM´s works without any problem.
The backup location is Synology DS414 NAS and the servers are set up using iSCSI, for connecting separate backup lun´s for each server.
The Hyper-V host and both VM´s are patched up-to-date. Ofcourse i have tried a lot of restarts, looking event log, VSSADMIN - cannot find any errors...
The network setup:
Hyper-V host has a team of two physical adapters, that is set up with a external virtual switch (shared with management operating system) and used by the VM`s normal network trafic.
Hyper-V host itself is using separte physcial network card, for connecting with iSCSI to Synology NAS.
I tried to set up another physical network card on the host and create a new virtual swich, add extra virtual nic to VM`s and use this for iSCSI traffic for Windows backup and it didnt make things better.
I need to find a solution, because i cannot restart the server every night for the backups to work.

Hi,
There is a similar thread, please change the performance options in WSB from fast to normal:
wbengine.exe taking all CPU
http://social.technet.microsoft.com/Forums/en-US/be5d5743-1ea7-4c26-8072-0c010b47dd9a/wbengineexe-taking-all-cpu?forum=winserveressentials
If the issue still exists, please check if there any error message in the Event Log.
Best Regards,
Mandy
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Crystalras.exe consuming 100% CPU usage

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