Another variant of actions
check what errors you have in the log (Your project\Saved\Log). If it’s related to dll then there should be line with - Missing … something
You can Ignore this part if you have it (it’s usually at the beginning of the log)- LogWindows: Failed to load ‘aqProf.dll’ (GetLastError=126) LogWindows: File ‘aqProf.dll’ does not exist LogWindows: Failed to load ‘VtuneApi.dll’ (GetLastError=126) LogWindows: File ‘VtuneApi.dll’ does not exist LogWindows: Failed to load ‘VtuneApi32e.dll’ (GetLastError=126) LogWindows: File ‘VtuneApi32e.dll’ does not exist
you should search for LogWindows: Failed to load ‘
…/Your Project/Binaries/Win64/UE4Editor-…dll’ (GetLastError=126) something like this
and after this should be message about missing something
Overall suggestion would be - read your log for missing modules\errors, check your Path variable, try to remember what libraries did you link in your project (maybe you installed something and it was added to the Path automatically). If this is dll related error and you will find the cause - you can download needed dll and place it in the project binaries (well, the path will be in the Log) or add to the Path var