How can we help you today?

What causes a "Runtime Error 372 - Failed to load control 'LFile' from SKCL.dll. Your version of SKCL.dll may be outdated"?

This error usually occurs when authorizing Concept, Proworx or Control Expert 14 (Unity Pro software. The SKCL.dll must reside in the \windows\system32 or \winnt\system32 folder. If it currently resides in this folder, you may need to register the .DLL.
To do this, bring up a DOS shell and type:

c:\> regsvr32 skcl.dll

DLL Error

You should then be able to launch the Authorization utility.

Schneider Electric USA

Explore more
Range:
Users group

Discuss this topic with experts

Visit our community and get advice from experts and peers on this topic and more
Explore more
Range:

Need help?

Need help?

Product Selector

Product Selector

Quickly and easily find the right products and accessories for your applications.

Get a Quote

Get a Quote

Start your sales inquiry online and an expert will connect with you.

Where to buy?

Where to buy?

Easily find the nearest Schneider Electric distributor in your location.

Help Center

Help Center

Find support resources for all your needs, in one place.

  • Help and Contact Center
  • Contact Sales
  • Find our Offices
  • Where to Buy
  • Tech Support: 877-342-5173
  • Careers
  • Company Profile
  • Investors
  • Newsroom
  • Report a Misconduct
  • Product Documentation
  • Software and Firmware
  • Product Selector
  • Product Replacement
  • DigestPLUS Online Catalog
  • Industries
  • Partners
  • Schneider Electric Community
  • Events
  • Privacy Policy
  • Cookie Notice
  • Terms of use
  • Change your cookie settings