# PMS not working. DLL not found errors
**URL:** https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643
**Category:** Plex Media Server
**Tags:** server-windows
**Created:** [June 12, 2025, 3:09am UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643 "2025-06-12T03:09:14Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@theeericpeabody](https://forums.plex.tv/u/theeericpeabody)
#### Post date: [June 12, 2025, 3:09am UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643/1 "2025-06-12T03:09:14Z")
No idea what happened. Plex was working last night and then this morning (6/11/25) stopped working out of nowhere. I’ve been unable to restore to an earlier restore point, and am trying to avoid reinstalling Plex if I can help it. I have a backup, but it’s over a month old. Any suggestions?
Again, when I try to start the server, I get errors that the following are not found:
libcurl.dll
fmt.dll
boost\_filesystem.dll
---
### Author:  [@OttoKerner](https://forums.plex.tv/u/OttoKerner)
#### Post date: [June 12, 2025, 8:00am UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643/2 "2025-06-12T08:00:22Z")
> [@theeericpeabody](#):
>
> the following are not found:
>
> libcurl.dll
> fmt.dll
> boost\_filesystem.dll
dll’s should not go AWOL out of the blue. Verify that your hard drive is in good health.
Do also check the log files of your anti virus software, if it perhaps mistakenly identified these as viruses and deleted them. If it did, report it to the manufacturer as a false positive. (Or switch AV apps.)
> [@theeericpeabody](#):
>
> am trying to avoid reinstalling Plex if I can help it.
There is no danger in performing a repair installation.
But you need to make sure that you are NOT using any kind of “Uninstaller” or “Windows cleaner”-type of app.
You will find the last 4 installers in your [Plex data folder](https://support.plex.tv/articles/202915258-where-is-the-plex-media-server-data-directory-located/), in the subfolder `/Updates`.
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### Author:  [@theeericpeabody](https://forums.plex.tv/u/theeericpeabody)
#### Post date: [June 12, 2025, 12:24pm UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643/3 "2025-06-12T12:24:20Z")
Thank you!
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### Author:  [@theeericpeabody](https://forums.plex.tv/u/theeericpeabody)
#### Post date: [June 12, 2025, 12:32pm UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643/4 "2025-06-12T12:32:07Z")
Server is working again. It does appear to have been my antivirus
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [September 10, 2025, 12:32pm UTC](https://forums.plex.tv/t/pms-not-working-dll-not-found-errors/922643/5 "2025-09-10T12:32:24Z")
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