Fixing “Invalid search path” for LIB environment variable in MSBuild

Problem: Trying to run msbuild.exe against a .sln file results in a failed build with an error message containing the error

error CS1668 : Warning as error : Invalid search path 'C:\Program Files\Microsoft SDKs\Windows\v6.0A\lib' specified in 'LIB environment variable' -- 'The system cannot find the path specified. '

Examining the path C:\Program Files\Microsoft SDKs\Windows\v6.0A shows no \lib folder present.

Solution: Simply add an empty \lib folder. MSBuild doesn’t actually need anything in the SDKs folder for most builds; however, the vsvars32.bat file sets that directory as the LIB environment variable anyway.

Read more: FrazzledDad

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