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Kudos0

cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Seeking a solution as Norton Security continues to run at high CPU for several minutes at startup, so this is definitely *not* solved on v.22.19.8.65.  The prior threads are below but are closed to new posts, so needed to start this thread to continue.

System:

Laptop running 64-bit Windows 7 Home Premium SP1.  Every day at or shortly after startup (or sometimes even later), my CPU spikes (50% or higher) with the Windows Task Manager reporting cltRT.exe is the culprit. It's easy to spot as the circular hourglass icon appears in the mouse pointer icon throughout the duration as others have reported.  The prior suggested "fix" for Window 8 & 10 is NOT applicable to Windows 7, and so this problem has continued through multiple Norton updates.  My system is currently running Norton 22.19.8.65, but the problem began earlier this year with other recent version updates (perhaps around the time I noticed LifeLock in the title) and has continued to persist throughout with no change.  Neither this process nor the process tree can be killed in Task Manager, even when logged in as an admin.

Negative Impact:

This is causing significant additional CPU heat and system stress as my laptop's fan immediately kicks in at the highest and loudest speed during the entire episode (also causing additional battery drain) -- plus I'm concerned about what information is being sent back to Norton during this process.  It also delays launching programs, etc.  I've been using Norton AV/Security products for well over 15 years and am very frustrated that Norton has NOT found a suitable solution for this.  I kept hoping a new version would incorporate a fix, but contrary to some posts here, it has not.  Would greatly prefer not to have to switch security platforms.

Further Details:

For reference, the earlier detailed thread link is below:

https://community.norton.com/en/forums/dtrtexe-runs-high-cpu-startup

Note that the correct filename is indeed cltRT.exe found in the Norton Security program C:\Program Files (x86)\Norton Security\Engine and C:\Program Files (x86)\Norton Security\Engine32 subdirectories -- I have confirmed this is the actual name appearing in the Task Manager -- appears to be in the 32-bit program dir on a 64-bit system (this laptop was always a 64-bit Windows 7 platform).

The follow-up P.S. forum note marking one of the above posts as a solution is below, but it fails to take into account that the supposed solution does *not* address nor works in Windows 7 (as it apparently relies upon a feature native only to Windows 8 &10):

https://community.norton.com/en/forums/dtrtexe-runs-high-cpu-startup-ps

Could someone please advise whether a fix will be made for this situation?  Norton tends to pride itself on using lower system resources, but it appears at some point they introduced a licensing verification module (CLTRT = "Consumer Licensing Technologies" from the file properties and I'm assuming RT means either "real-time" or "remote") for their own benefit that is definitely having a very negative impact on my and others' systems.

[Apologies for the lengthy post, but I figured the context would be helpful.  Just to kindly anticipate a likely reply, please, this laptop is not able to be upgraded to Windows 10, as the necessary drivers do not exist for it (or I would have done so already).  There are still many Windows 7 users because there is not an upgrade path, so we're stuck with it -- the laptop still works.]

Appreciate any and all help, thanks in advance.

[P.S. My apologies for the duplicate post here, it's my first time posting on the Norton forums.  I saw afterward that my first post went under the "Norton Internet Security | Norton 360 | Norton AntiVirus" product category and I'm thinking perhaps it should have gone here under "Norton Security | Norton Security with Backup" -- was wondering why I didn't see it in the forum list after I posted.  It's a bit confusing.]

Labels: Performance

Replies

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Can anyone kindly confirm whether they are still seeing this behavior on Win 7 and whether anything has stopped cltrt.exe from running heavy CPU?

Would sincerely appreciate if any moderators or Norton folks could help out here too.

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Yes on WIN7 I still get the spinning mouse Icon and see what I thought was dtRT showing in the Task Manager but I guess its the cltRT.  The process can not be selected to check the properties nor location from the task manager when its running.  Its running heavy on one of the cores of my CPU but overall its only reporting at about 5%.  After about a minute or so it stops.  

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Hi @Nunov_the_Above / @JJ_ ,

Thanks for reporting in Norton Community Forums. I have sent you a private message requesting logs for further investigation. Also, please provide below details. 

Any other security software installed on same system?

Any specific steps to reproduce performance issue, like while browsing internet with specific browser or using any specific application? 

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

So I've been waiting for the cltRT.exe to run so I could then run the NortonSymHelp tool to try to capture this process.  today I rebooted my system and after about five minutes the cltRT.exe started.  So I launched the NortonSymHelp.exe.  It just sat there spinning (not Responding) at the start screen until the cltRT.exe finished.  After it it started responding again I ran through the steps.  On finishing, I noted an error showed up related to ccSet_SCS is not configured and operating correctly.  Under Details, it states the Service is not installed.

I'm uploading the first run and a second run of the NortonSymHelp Logs for review and recommendations.

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

You need to have the Sym Tool running in the background waiting for the issue to occur. If the issue has already occurred and you then start the Sym Tool, it is too late for the tool to gather what caused the issue.

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

OK, I left NortonSymHelp up and running in background at step 4 (Debug logging is enabled) all night and today and finally caught the cltRT.exe running again.  I immediately click the next button and then clicked Yes to have you finished reproducing the issue.  NortonSymHelp started the collecting phase however, it just sat there until the  cltRT.exe finished, then started progressing.  Whether or not it caught the process in the act, I cant say.  But I'm uploading the third log file in hopes that it has what is needed to determine the issue.

Note, it appears to me that the cltRT.exe process may be taking priority and not allowing NortonSymHelp to run until it finishes. 

However, NortonSymHelp report still has the error referencing ccSet_SCS is not configured and operating correctly.  Under Details, it states the Service is not installed.  

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Note, it appears to me that the cltRT.exe process may be taking priority and not allowing NortonSymHelp to run until it finishes. 

That is probably what is happening. The rogue process is already using up the processing power, which is the problem in the first place. As SymHelp was able to get enough resources, it was able to complete its job.

Things happen. Export/Backup your Norton Password Manager data.
Kudos1 Stats

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Came home today and woke the PC up from sleep mode and found the cltRT.exe process running.  I tried to get the resource monitor up but by the time i got it up and running the cltRT process stopped.  I was able to get a screen shot as it terminated.  There appeared to be about 20 instances or so of the process listed under the CPU tab (see attached pic).

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

SarojaK:

Hi @Nunov_the_Above / @JJ_ ,

Thanks for reporting in Norton Community Forums. I have sent you a private message requesting logs for further investigation. Also, please provide below details. ...

Hi SarojaK:

As far as I know, none of the Win 7 SP1 users posting in OUgrad's thread dtRT.exe Runs High CPU on Startup (including H00D00 and K.C.) ever found a solution to this problem before that thread was auto-locked.  Note that OUGrad later confirmed the high CPU was caused by cltRT.exe, not dtRT.exe.

At one point the OP OUgrad thought the v22.17.2.46 product update fixed the problem and marked that thread as solved, but their 26-Jun-2019 post <here> confirmed the high CPU consumption by the CLT (Consumer Licensing Technologies) component cltRT.exe returned as soon as v22.17.3.50 was released.
-------------------
32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security Deluxe v22.15.2.22

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Hi @JJ_, I have sent you a private message requesting for process dump file for cltRT.exe for further investigation. Thanks

Sunil_GA | Norton Forums Administrator | Symantec Corporation
Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Sunil_GA,

I will try again to select this process to Create the Dump File but I have not been successful in past attempts.  This process seems to run in some form of stealth (or is hanging the system and not allowing it to respond) as I cannot highlight the file nor right click it to select its "properties" or select "open its location" in the Task Manager when its running.  Any other process's running during the event I can select and right click and open the properties or location just not the cltRT.exe process.

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

OK so the cltRT.exe process just ran moments ago.  While it was running I right click the process and selected "Create Dump File".  I received a popup error with the following message:  "The operation could not be completed.  The operation is not valid for this process".  And yes, I'm logged in as administrator.  

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

That may be Norton Product Tamper Protection feature blocking access. I you can stop or manipulate a Norton process, so could any malware that might sneak by all your protections.

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

peterweb,

Just thinking If that were the case, wouldn't tamper protection also prevent accessing NortonSecurity.exe's process?   I can open its file location, properties, create a dump file, and even end its process from the task manager.     

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

From your list of what you say you can do with NortonSecurity.exe, the only thing that tamper protection would stop would be ending its process, or trying to change the file. Just viewing the file location is not a risk to the software. Try renaming the file. I just tried that and was denied access to the change, even after accepting the UAC prompt with my Admin password. The block that occurs then is NTP kicking in.

Have you actually tried ending the process with NTP enabled? This is what I get when I tried just now.

And clicking End Process, this is what I get. NTP is protecting itself.

I get the same results with both the System NS process, and the user NS process.

Things happen. Export/Backup your Norton Password Manager data.
Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Sunil_GA,

Please see uploaded file per your request

Kudos0

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Sunil_GA,

File uploaded as requested.

Kudos1 Stats

Re: cltRT.exe Continues to Run High CPU on Startup - NOT FIXED

Just a follow-up, I've been providing Norton support with logs and such trying to help get to the bottom of this issue.  At this point, I've removed and reinstalled NS after deleting all remaining folders/files in reference to NS on 12/5.

About 24 hrs after the reinstall the cltRT.exe process did start and run however, it only ran briefly (about 30 seconds compared to the 2-3 minutes it used too).  I haven't seen it since.  I will continue to keep an eye on this and update if I see it again. 

Also, what was determined as to why you cant lock onto this file while its running is because its constantly opening and immediately terminating and reopening new instances of itself every second.  If you look at the picture I posted above from the resource manager, each instance has a different PID.  Hence why you cant open its properties, file location, create a dump file, etc because it had already terminated.