Member Avatar for djm123

My Norton will not update, I get the LU 1806 error.., not sure WHERE to start here, TOTALLY un install Norton, will that fix it? How do I approach it....The update appears to download, yet will not install???? HELP!

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Short, practical summary and next steps for LU1806 (red X on definitions)

LU1806 means LiveUpdate downloaded updates but the installer step failed — LiveUpdate reports the downloads completed but “none were installed.” Start with the simple checks first: confirm which Norton product/version and that the subscription is current (an expired subscription will show a red X), reboot, set the correct system time/date, then run LiveUpdate again. (community.norton.com)

If the quick checks fail, look at the LiveUpdate details (click the “+” beside the failed update) and the LiveUpdate log to see which component and HR code failed. Two common, actionable causes: an old or mismatched LiveUpdate component left behind (renaming/removing the C:\Program Files\Symantec\LiveUpdate folder and reinstalling the current LiveUpdate often fixes component/compatibility problems), and background processes holding files (some installations have broken when a job-tracker or similar process was running — ending that process and re-running LU helped). (community.norton.com)

Workarounds and escalation: if only virus defs are failing, use Symantec’s manual updater (Intelligent Updater / manual DAT) as a temporary fix. If LiveUpdate consistently fails for program updates, fully remove Norton with the official Remove & Reinstall (Norton NRT) tool and then reinstall the latest build that’s compatible with your OS (don’t try manual registry surgery unless experienced). Also follow ’s malware advice before a reinstall — infections can block installers — and mention your product/version here like asked so helpers know which patches apply. (securityresponse.symantec.com)

Quick checklist

  • Confirm product version and subscription, reboot.
  • Re-run LiveUpdate and expand the failed update for details.
  • If LU shows an installer error, rename/remove old LiveUpdate folder and install current LiveUpdate. (community.norton.com)
  • Check for/stop interfering processes (e.g., tracker.exe) and retry. (veritas.com)
  • If defs only: use Intelligent Updater; if still broken: run Norton Remove & Reinstall and reinstall latest compatible Norton. (securityresponse.symantec.com)

If logs still show LU1812 or other HR codes, paste the LiveUpdate log lines (not the whole system log) here and mention the exact Norton product/version — that will narrow the fix.

Recommended Answers

All 6 Replies

Member Avatar for 1o0oBhP

I have symantec 9 and LU works OK, what version do you have? or am i asking something redundant?

Member Avatar for djm123

What are you asking?

Member Avatar for djm123

What are you asking?

The problem is a red X on Virus definations, it gets them but does not install! ????

Member Avatar for caperjack

viruses and trojans on you machine can cause this ,or you time is up!!nortons live updates has expired! try this
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
This problem could occur because of Spyware , go on over to the Security section of this fourm and post you problem along with a hijackthis log .
Spyware & Trojans and Other Nasties
,,,,,,,,,,,,,,,,,,,,,,,,
Please Don't post the hijackthis log in this section Thanks .
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Please do this.
Download 'Hijack This!'. HijackThis
Save it in a convenient permanent folder such as C:\HJT\, double click HijackThis.exe, and hit "Scan".

Your copy of HijackThis needs to be in a folder of it's own. When HJT fixes anything, it makes backups of the original files in the folder it is in. Since Temporary folders are emptied now and then (the files are DELETED), it would not be a good idea to have your backups there. Those backups would be VITAL to restoring your system if something went wrong in the FIX process!


1. Please go to you're 'My Documents' folder, right-click and select 'New > Folder' then name the folder 'HJT'.

2. Copy and paste HijackThis.exe to the new folder.

3. Close ALL windows except HJT

4. SCAN with HJT

5. POST the new log in this thread using 'Add Reply'

DO NOT MAKE ANY CHANGES OR CLICK "FIX CHECKED" UNTIL WE CHECK THE LOG, AS SOME OF THE FILES ARE LEGIT AND VITAL TO YOUR COMPUTER'S HEALTH

Member Avatar for 1o0oBhP

What are you asking?

im sure you can read what i wrote????? i asked for the version, just in case like caperjack said - it expired. I myself have experienced red Xs usually I would assume the download got infected by a virus, running a scan the re-starting LU solved any probs for me.....

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