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Scans too slow

Norton has always worked well for me for years. Scans have always been normal (8mins for a quick scan; 2 hours or so for a full scan).

A few months ago, I had my internet provider reset my router and my wifi connection. After that, my scans have taken a really long time. Now, a quick scan (of 9 000 files or so) can take anywhere from 20 mins to over an hour. A full scan (of approx. 900 000 files) takes at least 12 hours if not more (one scan lasted 16 hours)! The whole Norton program lags a bit too. It always takes several seconds to begin a scan, or load Norton’s History Page. When I pause or stop a scan it can take a good minute for it to actually pause/stop.

I have tried several things to hopefully help the situation. I did a Disk Check of the computer/hard drive, nothing came up. I have re-installed my Norton product with the remove and reinstall. I have run Live Updates, did the Disk Optimizer and ran the Norton diagnotics tool on the Settings/Help page-nothing helped. I tried doing a scan in Silent Mode, that didn’t make a difference. I have called Norton customer service and he was unable to help me either. I have disconnected my router and did a quick scan and that didn’t make a difference. I have no other anti-virus software on my system.

I did notice a few days ago, that when I was watching a DVD on my laptop, Norton did a quick scan in Silent Mode and it was a normal scan (9 000 files in only 8 mins).

Today, I was offline on/off and I noticed there were two quick scans done, both only took 8 mins. When I manually, began a quick scan later on, I ended up cancelling it as it was taking too long again.

I normally do manual scans, and that is how I noticed the scans were taking too long. When the scans happen in the background (when the computer is idle) they take long too, so I was surprised when Norton did a quick scan when I watch DVDs and when I was offline, the scans were normal.

I am not sure why this is happening, any help would be appreciated. But please if you offer advice, I am not a computer savvy person, so please keep the help basic/not complicated.

Thanks.

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好评0

Re: Scans too slow

Hi,agocon. Norton will normally do a Quick Scan after a definitions update.

If you want to speed up full scans, go to the main UI--- Security > Scans > Insight Scan, and let the Running Processes scan complete.

Then on the drop down tab, select ALL FILES.

Let that run, and from then on scans will be quicker as Norton will only scan new/changed files.

Hope that helps.

Windows 10 Home X 64 Norton Security Premium Current
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Re: Scans too slow

This could also be a case of multiple antivirus programs interfering. Do you have only Norton?

好评1 Stats

Re: Scans too slow

If the troubles started when the router and wifi connections were reset, have you tried unplugging the router for a minute. After the restart, see if things are back to 'normal'.

Things happen. Export/Backup your Norton Password Manager data.
好评0

Re: Scans too slow

How could a router or connection slow down the scans? Despite the cloud scan, anything else? Kind of curious.

好评0

Re: Scans too slow

How could a router or connection slow down the scans? Despite the cloud scan, anything else? Kind of curious.

Good question, that I do not understand either. But as the OP says this started when the provider reset the router, it is worth a try to reset again.

Things happen. Export/Backup your Norton Password Manager data.
好评0

Re: Scans too slow

In theory, if the download speeds are slower and HDD needs to work constantly, Windows updates, driver updates and so on, it might slow down a little (Long shot). Anyways, I would call your provider to report a malfunction of service if there is any, the slowdown of downloads, poor browsing experience due to internet speed, or anything else and try figure out if it is on their end. At this point, we still need to hear from OP if he has done anything.

好评0

Re: Scans too slow

Hi everyone, thanks for the replies.

F4E, I have followed your instructions and changed my settings. I have not yet done a Full Scan to see if it works (because if it doesn't, it will take at least 12 hours), so I tested it on a quick scan. It has not changed the times at all.

I notice when I do a quick scan, it takes a long time to 'check for' backdoor rustock A, B, info stealer, VBS run auto. once those are checked, the quick scans moves along quickly and is done.

Josh Ross, yes, I only have Norton on my computer.

PeterWeb, I also thought it may be a router problem. so a few days ago, I did a scan with a different router connection, still no change.

I brought this problem to my local computer place for some advice, and they said that my laptop is running fine. they ran a couple of quick scans, and some scans were normal (8 mins) and some were not (29 mins). Then, they told me that maybe it's a RAM problem, but I don't think so. RAM problems don't happen overnight. One day Norton was scanning OK, the next it wasn't. And besides, if it was a RAM problem, you'd see it with how the computer works (slows down...) nothing is slow, just the Norton scans.

The only thing I haven't tried is to buy a new Norton product from the store and install it. I have done the remove and reinstall and that really didn't help. But I read someone else on here, had similar problems as I am having (he also was told it was his RAM or router) and eventually he brought a new Norton from the store and installed it, all was fine. I don't know, if that would make any difference.

好评1 Stats

Re: Scans too slow

As long as you have your Norton product updated to version 22.10.0.85, buying a new copy will do no good. All you get is a product key and instructions to download what will end up being the product you already have now.

The RAM could be a problem. Just because other software seems to work OK, a full system scan can use considerable system resources.   Try testing your RAM using MemTest from here.   https://www.memtest86.com/   It could just be one stick of RAM that is going bad. Even a new system could have a faulty stick.

Also, when you did the check disk did you run  "chkdsk c: /r"  without the quotes?  The /r checks the physical disk for errors that can cause longer scan times.

Things happen. Export/Backup your Norton Password Manager data.
好评0

Re: Scans too slow

To complement Peterweb's answer, you do a disk check using the command line. You get to the command line like this: Win Key + R and typing cmd. Afterward, proceed to write "chkdsk c: /r" (Peterwebs suggestion). Let us know if that helps. 

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Re: Scans too slow

Hi Josh Ross and peterweb, yes, when I did the Check disk I did "chkdsk c: /r"  without the quotes. I also did a disk check through Windows, in case it would be different, but both came up OK. I did the disk checks a while ago, when I first encountered this problem, don't know if it will help to do it again? 

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Re: Scans too slow

I don't think it is a good idea to put a computer one suspects has a defective hard drive through a long and intensive "chkdsk c: /r" (non-interruptible). If the drive is in bad shape but has replaced all the bad sectors (that exist at that moment) with spares the chkdsk will pass (not that anyone seems to ever post the chkdsk the results...), but the drive will still be defective, or if it is in really bad shape it may never finish or the drive might just stop working under the new stress.

I've used this tool many times to check/test if a drive is defective without adding any more stress to it:
https://sourceforge.net/projects/gsmartcontrol/files/1.0.2/gsmartcontrol-1.0.2-win32.exe/download
tool homepage:
https://gsmartcontrol.sourceforge.io/home/index.php

You would have to save and post the log if you want me to look at it (there are several logs, but the normal one will do to start with).

Said previously:

"Chkdsk /f" checks the filesystem for corruption. "Chkdsk /r" does that and does a check for bad sectors -- poorly, then doesn't report the results.

GSmartControl lets you check if there are bad sectors now, and often if there ever were (even replaced with spares).

Remember:

"there are some bad (unreadable) sectors" -- The drive is bad. "some bad sectors" means that some of your data (depending on what [OS, user data, etc..], if any thing was on that sector) has been lost. -- the drive is bad. SMART self-test should fail if their are exposed bad sectors. If bad sectors have been replaced with spares internally to the drive (maybe corrupting the filesystem) chkdsk (without /r) will fix that but...

"Sink holes open near and around your property destroying a room and skewing all the doors in the process. The person who build/sold you your house guaranteed there would be no sink holes"

Option A: Hire a contractor to see what doors he can reframe to open again, rebuild the room (leaving all your valuables in the house). Be oblivious to the sink holes until you find your house is only a hole.

Option B: Grab your stuff while you can and complain to the seller, but don't rebuild the house over the sink hole while it collapses around you.

chkdsk on a bad HD = "rebuild the house over the sink hole while it collapses around you, without getting your data first or realizing there is even a problem"

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