• All Community
    • All Community
    • Forums
    • Ideas
    • Blogs

Not what you are looking for? Ask the experts!

This forum thread needs a solution.

Norton constant high disk usage

NIS is constantly writing to the C: drive and slowing down the computer.  This has been happening for some 24 hours (that I know of).

Nis.exe is constantly writing to two files: 1.4 MB/sec to CONFIG_CUR.dat and 1.1 MB/sec to CONFIG_CUR.dat.log.

-- C:\ProgramData\Norton\{0C55C096-0F1D-4F28-AAA2-85EF591126E7}\NIS_22.5.2.15\symnetdrv\CONFIG_CUR.dat

-- C:\ProgramData\Norton\{0C55C096-0F1D-4F28-AAA2-85EF591126E7}\NIS_22.5.2.15\symnetdrv\CONFIG_CUR.dat.log

Curiously, nis.exe is also sometimes writing to other files in the NIS_22.5.2.15 directory, but just a thousand or so bytes per second per file.  All of nis.exe's reported disk usage is writing to NIS_22.5.2.15, and sometimes writing to C:\$LogFile (NTFS Volume Log), 30 MB/sec.  There is no reading by nis.exe, only writing.

C: drive is reporting an average of 95% usage.

Windows 8.1.  NIS is up to date.

What is causing this?  How can I get it to stop?



Re: Norton constant high disk usage


Have you turned off Fast Startup? Have you restarted your computer?


Success always occurs in private and failure in full view. Windows 10 Pro 64 bit Norton Core Security Plus Core Firmware 282 Chrome latest version.

Re: Norton constant high disk usage

I found that the nis.exe disk activity stopped when I stopped Outlook, and restarted when Outlook was running.

I updated iCloud (which Outlook uses) and rebooted.  The nis.exe disk usage returned to normal.  At this point, nis is not accessing either of the CONFIG_CUR.dat files.

For now nis has returned to normal.  I do not know what the interaction was between Outlook (2007) and NIS and possibly Apple iCloud that caused the high disk usage.

Will continue to monitor.

This thread is closed from further comment. Please visit the forum to start a new thread.