I\'ve just installed SQL Developer 4.1.1 64-bit on a Windows Vista machine, in directory c:\\sqldeveloper
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My Java installation is in c:\\program
Got the same issue with newest versions.
Interestingly enough, msvcr100.dll is present in JRE 1.8.0_251, but not in JRE included in JDK 1.8.0_261. Even though I run SQL Developer with included JDK, it tried to use my installed JRE 1.8.0_261.
Resolution was simply to copy missing msvcr100.dll from any other place (like jre1.8.0_251\bin or maybe even Windows/System32) to the JRE used by SQL Developer. In my case to jdk1.8.0_261\jre\bin.