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Kudos0

NObuclient.exe Memory instruction cannot be read

For several days when I start my computer I get a message: NOBuClient.exe Application Error. See attached image. The Backup program appears to be running properly.  Any suggestions? Thank you.

File Attachment: 

Replies

Kudos1 Stats

Re: NObuclient.exe Memory instruction cannot be read

Hello Howard. Download and run Malwarebytes from here. This is most likely some type of malware IE: browser extension hijacker loading at boot time. Remove whatever MBAM quarantines and reboot. Let us know if this corrects the issue.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: NObuclient.exe Memory instruction cannot be read

That took care of the error messsage.  Thank you. 

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

Awesome news. If you could please mark the thread as solved, just mark the post that was the solution in the small checkbox. Others can then see your solution. Have a great day today!!

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: NObuclient.exe Memory instruction cannot be read

Howard2602:

That took care of the error messsage.  Thank you. 

Um, what did MBAM quarantine?  

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

The problem came back at cold start.

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

Howard, Set your "boot time protection" in your Norton settings to aggressive.

Next, have a look at your startup items in the Task Manager, Ctrl+Alt+Del, then under the startup tab. See if there is a startup item there that doesn't make sense. Remove it or disable it if unsure. Also clear the caches for ALL browsers on the system. Delete the system temp files folder as well. In the run command box type %temp%, press enter. Delete all folders and files there. Reboot to check for the issue being present.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: NObuclient.exe Memory instruction cannot be read

I changed the boot time setting.  Also, the error message does not always come up when I do a cold boot after the first time in the morning so I will need to wait until Thursday to check that.  And, I checked the Windows Error logs and found repeated entries of

Faulting application name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071

Faulting module name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071

Exception code: 0xc0000005

Fault offset: 0x0000000000019f6f

Faulting process id: 0x648

Faulting application start time: 0x01d4be37af5846e0

Faulting application path: C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe

Faulting module path: C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe

Report Id: b4f51686-b1e0-430c-beaa-1a6079da6bd8

Faulting package full name:

Faulting package-relative application ID:

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

I found out why the error message only appears first thing in the morning.  When I did a cold start during the day, the modem/router was already on.  If I turn it off and start the cold boot, the error message does appear.  The errlor log messaage above still occurs either way.

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

Howard, this Exception code: 0xc0000005 is a memory access violation with Norton Backup. Please disable "fast startup" in your windows settings and reboot. Here is how to do that. Let us know if the message persists.

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: NObuclient.exe Memory instruction cannot be read

That did not fix the problem. By the way, if my modem/router is fully on when doing a cold boot, I do not get the error message.

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

What is the reasoning behind powering down your router? End of day? I don't know why anyone would do that. Your router and or modem should remain powered on at all times.

A last resort may be to Remove and reinstall your product. Follow this article, and perform a REMOVE ONLY and reboot. Log into your Norton account and reinstall your product from there. Make sure you run live updates until none are present and reboot. Run live updates again until none are present, reboot a second time.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93
Kudos0

Re: NObuclient.exe Memory instruction cannot be read

I had the modem/router fully on when starting the computer.  AS in the past with that on, the error message did not appear.  However, there is a related entry in the computer's error log.  

Faulting application name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071
Faulting module name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071
Exception code: 0xc0000005
Fault offset: 0x0000000000019f6f
Faulting process id: 0x3780
Faulting application start time: 0x01d4bfcb93cb5eee
Faulting application path: C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe
Faulting module path: C:\Program Files (x86)\Symantec\Norton Online Backup\NOBuClient.exe
Report Id: ed571e00-bc9a-4cf7-a611-15dfbc97eb3a
Faulting package full name: 
Faulting package-relative application ID: 

Event ID: 1000

The date/time stamp is when the computer started to cold start.

What does this mean?

Thank you.

Kudos0

Re: NObuclient.exe Memory instruction cannot be read

Howard, this Exception code: 0xc0000005 is a memory access violation with Norton Backup Client listed as the faulting module/application. Some common causes and types of remediation can be found here as well.

The one question asked was WHY do you power down your modem/router? Try leaving it powered up for a couple of days and do cold boots to see if that may be the issue with the nobuclient trying to check Norton services.

Faulting application name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071
Faulting module name: NOBuClient.exe, version: 2.1.17869.0, time stamp: 0x4c056071
Exception code: 0xc0000005
Fault offset: 0x0000000000019f6f

If the above doesn't help. Perform a removal ONLY of your Norton product using this guide. Reboot, then shut down. Power the computer up again and check for the error occurring.

Cheers

Retired military (Navy 1980-2002) AO1 (AW) Aviation Warfare Specialist "From DOS to Windows10 what a journey it has been" / MS Certified Professional / Windows 10 Professional x 64 version 1809 / build 17763.437 / NCSP 22.17.0.183 / Norton Core v.282 on Android 1.93

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