9 Replies Latest reply on Jul 3, 2015 2:03 PM by Ron Chappell

# Failed to load sldresu.dll

I, and some of my coworkers, encounter this error message randomly while using Solidworks.  We have tried the regedit fix where you rename to "solidworks - old" but this only works for a day or two.

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I'm getting this error today when browsing SW files just using Windows Explorer

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I also have this problem. SW15 SP2.1 on Windows 8.1.

Sometimes the thumbnails and date don’t load in explorer cause the whole system to hang. Sometimes I get an error saying sldresu.dll cannot load. I have tried https://forum.solidworks.com/thread/29353 without success.

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Hi jonny ,

I have checked in SolidWorks KB about this error. A clean uninstall of SolidWorks and reinstalling it will try to fix the problem rather than renaming it. Kindly try this out .

Thanks & Regards ,

N.Vignesh

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We have tried this a couple times on different machines.  It still comes back.  It seems as though Windows and SolidWorks are in a heated battle.

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As far as I can tell, it pops up when you have the preview pane open.  I think it has to do with the SolidWorks version column that you can turn on in Windows explorer.

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Just downloaded and installed 2015 SP3.0.  Still not fixed.  Unbelievable.  I don't understand how more people aren't experiencing this problem?  I can't function if I can't see the Description custom property as a column in Windows Explorer, not to mention have the Details pane open.  You can easily edit the description of SW files right in Explorer without having to open it in SW.  I've been doing this for years and now I've been neutered the past 2 months.  2015 is hands-down the most bug-ridden version I've used.  Shame on you, SolidWorks (Dassault), for not fixing this.

• ###### Re: Failed to load sldresu.dll

Same problem.  Issue appears to be in the registry. In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs there a many many SW dll's with invalid paths.  They point to C:\Program Files\SolidWorks Corp\SolidWorks (2)\lang\english\, but on my system these files are at C:\Program Files\SolidWorks Corp\SolidWorks (2)\lang\english ,  No "english" at end.

Actually in there twice : C:\Program Files\SolidWorks Corp\SolidWorks (2)\swVBAServer\lang\English\sldresu.dll, and both here the english shouldn't be there either.

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My error was calling out the file path of C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\lang\sldresu.dll. There was no sldresu.dll file in that location. To fix it I copied the sldresu.dll file out of C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\lang\english and pasted it in the path the warning called out. So far it has been about 2 weeks with no error and it seems like solidworks and explorer are working togeather again.

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The problem occurs when you have the Preview pane or Detail pane turned on in Windows Explorer relates to SPR 832474 the work around is to turn these off. The SPR has a status of Under review (implemented) so hopefully will be resolved in a later Service Pack. I have seen the issue with the missing thumbnails which seemed to be resolved when install was updated to SW2015 SP3 it required the files to be saved again in that version though rather than retrospectively fixing the problem.