"One or more SHX files are missing. What do you want to do ... - Autodesk
This is the most crucial step. You must place the font file into the correct directory so AutoCAD can recognize it. Tai Font Uv-abc.shx
Warning: Do not use random font download sites. Scan any downloaded .shx with Windows Defender or an antivirus tool. "One or more SHX files are missing
Before closing the drawing, run the -STYLE command, select every text style that uses this font, and change it to ISOCP.SHX (a near-universal fallback). Then PURGE the unused styles. This "future-proofs" your file. run the -STYLE command
Before downloading, check these directories: