This article describes a hotfix package for Microsoft Visual Studio 2013 Update 5. The hotfix contains a fix to the Visual C++ optimizer and code generator (c2.dll). For more information, see the "Issues that are fixed in this hotfix" section.

Issues that are fixed in this hotfix

The following bug is fixed by this hotfix:

  • In rare circumstances, linking of C/C++ binaries with Profile Guided Optimization (PGO) enabled may fail with fatal error C1001. This hotfix fixes a bug that can cause such failure in PGO .

Note If the issue isn't resolved after you install this hotfix, then it's a different issue. In that case, you can submit a new request.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Any additional feedback? (Optional)

Thank you for your feedback!