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Temporary files are not deleted

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Posted on by RI-13050859-0

Hello,

For a few weeks now, some temporary files have been generated, but I don't know how.

What could be generating these files?

Is it an antivirus issue?

File names example : __TEMP__3a086d8594b240c6acc3954e0c509626.tmp.html

File content:

Regards.

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Microsoft Dynamics NAV

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Martin Dráb 239,029 Most Valuable Professional on at

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Moved from Integration, Dataverse, and general topics forum to Small and medium business | Business Central, NAV, RMS forum.

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RockwithNav 8,941 Super User 2026 Season 1 on at

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Could be several reasons.

Try scanning once before we jump in some other areas. :)

Blog - rockwithnav.wordpress.com/
Twitter - https://twitter.com/RockwithNav
Facebook - https://facebook.com/rockwithnav/

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RI-13050859-0 14 on at

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The temporary files have been there since 04/27/2025 and are getting bigger. It started at 45 MB and now it's creating 800 MB files.

I've deleted them all manually, but it keeps creating new ones.

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RI-13050859-0 14 on at

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more info:

microsoft dynamics 365 bussiness central 14.7

Windows server 2016

kaspersky endpoint

full path to file: \ProgramData\Microsoft\Microsoft Dynamics NAV\140\Server\MicrosoftDynamicsNavServer$nvc140\users\default\NCABLE\username\TEMP\__TEMP__83d2c77448a245d0a057f6069550ca38.tmp.html

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Sohail Ahmed 11,169 Super User 2026 Season 1 on at

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Maybe this will help you investigate the issue.

These temporary .tmp.html files are usually created by background processes or applications handling previews, exports, or data processing. It’s unlikely to be an antivirus issue. Check recent system activity or integrations to narrow down the source.

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YUN ZHU 99,055 Super User 2026 Season 1 on at

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It is recommended to submit a SR to Microsoft and ask their technicians to assist in the investigation. BC14 has less than half a year of support period, after which Microsoft will stop any support.

Thanks.

ZHU

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Khushbu Rajvi. 22,128 Super User 2026 Season 1 on at

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Agree with previous responses, You should raised SR

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