A quick sanity check for an XMT_TXTQUO file is basically a safe first step to confirm it’s probably a Parasolid transmit CAD file before searching for specialized software, starting with the source—if it came from engineering or CAD contexts like suppliers, designers, or machine shops, it’s likely 3D geometry; checking Properties can hint at size patterns where tiny files may be placeholders and larger files match real geometry, and peeking in a text editor like Notepad or VS Code can reveal structured text, though you shouldn’t save or let any tool reformat it.

If the content looks like gibberish, that may simply reflect a packed format rather than something being wrong, and you should still attempt to import it into a Parasolid-aware CAD system; for a harmless deeper check, you can use PowerShell to print initial lines or view the first bytes in hex to confirm the nature of the data, and if a CAD tool hides the file in its Open dialog, copying and renaming it to .x_t can make it selectable without modifying the actual file.

XMT_TXTQUO is essentially a Parasolid "transmit-text" format enabling CAD geometry exchange between Parasolid-compatible systems; it behaves much like the common .X_T file (plus the binary .X_B / XMT_BIN versions), and many tools see it as just a renamed Parasolid text transmit, which matches its listing next to X_T under the MIME type `model/vnd.parasolid.transmit-text`, signaling that it's a Parasolid text-model container.

The odd naming stems from some systems using compound extensions rather than `.x_t`, adopting formats like `XMT_TXT…` to denote "Parasolid transmit" and "text," with suffixes like QUO serving only as variant identifiers in that environment; functionally, it’s still Parasolid text transmit geometry, and you can import it into any Parasolid-capable tool, using the workaround of renaming a copy to `.x_t` when your CAD program won’t list it automatically.

Opening an XMT_TXTQUO file usually involves working with it like a Parasolid text-transmit file and choosing any CAD tool that reads Parasolid, with programs such as SOLIDWORKS, Solid Edge, or NX letting you import it the same way as a normal .x_t—use File → Open/Import and either select Parasolid or show All files; since many tools filter by extension, the practical fix is duplicating the file, renaming the copy to .x_t, and importing that, which leaves the underlying geometry unchanged.

For more regarding XMT_TXTQUO file editor stop by the web site. If you don’t need full CAD editing and only require viewing or conversion, a CAD translator/viewer is commonly the quickest fix: open the file and convert it to STEP (.stp/.step), which practically all CAD tools can read; if the file won’t open anywhere, it’s usually a binary Parasolid under a different name, a damaged file, or something depending on sidecar files, so the safest action is to get a STEP export from the sender or confirm the originating system and try again.