Have already tried to solve this problem on forum but not gained no result: https://forums.adobe.com/thread/2550751. Need solvation of this problem, because our video editors want to work with Adobe Premiere only, we are not interested in Final Cut or other simular softwares.
Problem is the same as it is described on forum, but duplicate in here for extra convenience:
All original files for these files with .symlink extension were created in Adobe Premiere Pro, so there couldn't be any problems with compatibility or cracked files. Files with extension .symlink were created using standard Windows 10 functions (CMD & command "mklink"). I have checked how Adobe Premiere Pro reacts on .symlink extension and found problems in its workability. Example: Taking file "clipbefore.mov" -> using command "mklink after.mov clipbefore.mov" (so it will create symlink file after.mov) -> trying to import this after.mov in Adobe Premiere -> receiving such error window, in English it sounds somekind of "Failed to import file. Unsupportable format or cracked file". It is strange because file clipbefore.mov imports without any errors or problems. What is more strange, if we create .symlink file after.mp4 from clipbefore.mov, it imports good.

Extra info: original clip with extension avi/mxf/mp4 after creating symlink file with identical extension like the original file has imported without any troubles. Clip with extension mp4 after creating symlink file with extension .mov also imports (also strange).

I've also tested how it works in Finalcut and there everything goes as it should correctly. Hope this problem will not go unnoticed by the engineer, 'cause in chat it was impossible to solve this problem. Thank you for attention to this issue.