@RandomPipul Unfortunately that is a problem with Microsoft, not Pencil2D.
Microsoft will cease to support Windows 7 starting January 14th 2020, so it’s natural that these downloads are no longer supported. That said, you can find these files on the web.
For example, I found the site linked below that lets you download multiple dll’s for older versions of Windows. The link points to that specific dll.
That said Pencil2D is not responsible for anything that should occur to your computer if you download these files
Download it under your own risk (and make sure to use your antivirus to scan it)
https://www.dll-files.com/api-ms-win-crt-runtime-l1-1-0.dll.html
Good luck.