Download free

Changelog

What changed, release by release

Every release of the four programs since August 2025, taken from their release notes. A Δ marks a release that can change the results of a model you have not changed.

95
releases since November 2022
17
releases with a Δ since August 2025
XFrame2D 2027-07-01
latest release, 20 Aug 2026

RSS feed

1Releases

Each entry lists the new items, every calculation change and the notable fixes. The full list is in the release notes.

Releases since August 2025

Calculation change

The release notes describe a correction or a change of method in an analysis, a design check, a load generator or the model the solver receives. A model you have not changed can then give different results than in the previous version. If you rely on an earlier result, recalculate it with the new version.

38 releases shown

2026

  1. XFrame2D2027-07-01

    • ImprovedFixed two memory leaks, one of them in the solver; in certain cases the PC could crash.
    • ImprovedClearer labels on the moment and shear force lines.help desk #40
    Release notes (PDF)XFrame2D (PDF)

  2. XBeam2D2027-05-02patch

    • ImprovedFixed a memory leak in the solver.
    • ImprovedClearer labels on the moment and shear force lines.help desk #40
    Release notes (PDF)XBeam2D (PDF)

  3. XBeam2D2027-05-01

    • NewFire resistance: calculate the fire resistance of a steel beam.
    Release notes (PDF)XBeam2D (PDF)

  4. XFrame2D2027-06-01

    • NewFire resistance: calculate the fire resistance of steel structures.
    Release notes (PDF)XFrame2D (PDF)

  5. XFEM4U2027-04-02patch

    • ImprovedFire data of beams: fixed a crash when Properties was opened without fire data, and editing the fire data of several beams at once.
    Release notes (PDF)XFEM4U (PDF)

  6. XBeam2D2027-04-01

    • ImprovedChessboard loading is generated once and can be generated again with the new Load generator menu option.
    Release notes (PDF)XBeam2D (PDF)

  7. XFrame2D2027-05-01 Calculation change

    • ImprovedCalculation change: Beams on an elastic foundation and tension-only or compression-only members are now solved iteratively in the load combinations only, as in XFEM4U. Iterating in single load cases could fail to converge.help desk #34
    • ImprovedCalculation change: The SLS combinations were not generated correctly. Fixed.
    • ImprovedCalculation change: The automatic renumbering of nodes, on by default, could remove beams by mistake. Fixed.
    • ImprovedMuch faster drawing of models with many beams.help desk #31
    Release notes (PDF)XFrame2D (PDF)

  8. XFEM4U2027-04-01 Calculation change

    • NewFire resistance: calculate the fire resistance of steel structures.
    • NewIFC export: export the complete model to the open IFC format for BIM applications.
    • ImprovedCalculation speed is back at the level of version 2026.3. The notes state that the calculations keep the same reliability.help desk #63
    • ImprovedCalculation change: Plates: where a node falls on a plate edge, the edge is now also split for plates that are hidden (layer switched off).
    • ImprovedCalculation change: Orthotropic plates: an E entered by the user was overwritten with the default value. Fixed.help desk #67
    • ImprovedCalculation change: Correction factor kc (EN 1993-1-1, 6.3.2.3, Table 6.6) now follows Serna et al., using Mmax and the moments at five points.
    • ImprovedCalculation change: Lateral-torsional buckling: the factor C2 was not calculated correctly in all situations. Corrected; the notes expect a small effect.
    Release notes (PDF)XFEM4U (PDF)

  9. XBeam2D2027-03-02 Calculation change

    • ImprovedCalculation change: Chessboard loading: the ψ factor in the SLS combinations was wrongly set to 1.00. Fixed.help desk #30
    • ImprovedOutput table: VRd,c was printed too low for slab reinforcement given as diameter and spacing, because the longitudinal reinforcement area showed as 0 mm². The notes state that the calculation and the design were correct: an output error only.help desk #23
    Release notes (PDF)XBeam2D (PDF)

  10. XFrame2D2027-04-01 Calculation change

    • ImprovedCalculation change: A programming error meant that tension-only and compression-only members were not calculated correctly in certain situations. Fixed.help desk #27
    Release notes (PDF)XFrame2D (PDF)

  11. XBeam2D2027-03-01 Calculation change

    • NewNew solver: much shorter calculation times, especially for large geometrically non-linear models.
    • NewChessboard loading for variable loads (loaded and unloaded spans): the load cases and combinations are generated automatically.help desk #3160, #829, #2748
    • ImprovedCalculation change: Lateral-torsional buckling: for continuous beams where hogging dominates in an intermediate span (NEN-EN 1993-1-1 NB, Figure NB.6, formula NB.7), the sign of C2 was reversed in the critical moment (formula NB.NB.2). Corrected.help desk #3162
    • ImprovedCalculation change: Lateral-torsional buckling: C2 is now extrapolated for loads on the top flange, because C2 assumes the load at the centre of gravity of a flange. The notes expect a small effect.help desk #5
    • ImprovedCalculation change: Lateral-torsional buckling: the maximum moment of a beam segment between fork supports or lateral restraints could be taken from outside that segment, so the unity check could come out too high. Fixed.help desk #6
    • ImprovedCalculation change: Correction factor kc (EN 1993-1-1, 6.3.2.3, Table 6.6) now follows Serna et al., using Mmax and the moments at five points.
    • ImprovedPasting several beams could place their beam loads more than once. Fixed.help desk #3147, #18
    • ImprovedThe design working life is printed in the output.help desk #3081
    Release notes (PDF)XBeam2D (PDF)

  12. XFrame2D2027-03-01 Calculation change

    • NewNew solver: much shorter calculation times, especially for large geometrically non-linear models.
    • NewDraw a beam perpendicular to another beam, with snapping to the perpendicular point.help desk #3207
    • ImprovedCalculation change: Wind load generator: for wind parallel to the ridge, the distance e/4 for zone F is now measured from the eaves instead of from the ridge.help desk #3114
    • ImprovedCalculation change: Lateral-torsional buckling: for continuous beams where hogging dominates in an intermediate span (NEN-EN 1993-1-1 NB, Figure NB.6, formula NB.7), the sign of C2 was reversed in the critical moment (formula NB.NB.2). Corrected.help desk #3162
    • ImprovedCalculation change: Lateral-torsional buckling: C2 is now extrapolated for loads on the top flange, because C2 assumes the load at the centre of gravity of a flange. The notes expect a small effect.help desk #5
    • ImprovedCalculation change: Lateral-torsional buckling: the maximum moment of a beam segment between fork supports or lateral restraints could be taken from outside that segment, so the unity check could come out too high. Fixed.help desk #6
    • ImprovedCalculation change: Correction factor kc (EN 1993-1-1, 6.3.2.3, Table 6.6) now follows Serna et al., using Mmax and the moments at five points.
    • ImprovedCalculation change: Lateral-torsional buckling of tapered timber members used the wrong section height. Corrected.help desk #19
    • ImprovedThe design working life is printed in the output.help desk #3081
    Release notes (PDF)XFrame2D (PDF)

  13. XConstruct2027-03-01 Calculation change

    • NewFire resistance module: the fire resistance of tension members and of beams not prone to lateral-torsional buckling, the section factor of unclad and clad profiles, and the steel temperature over time, with a set of fire protection materials.
    • NewTimber column module, to Eurocode.help desk #3086
    • NewFoundation piles: enter your own soil profiles, or edit generated ones, and link them to one or more CPTs.help desk #3022, #3044, #3067, #3166, #3200
    • NewCalculation change: NEN 9997-1:2025+C1:2025 implemented; the pile factors of Table 7.c are updated.
    • ImprovedCalculation change: Punching: u0 and u1 were not calculated correctly for the position All-around edge. Fixed.help desk #3204, #3209
    • ImprovedCalculation change: Lateral-torsional buckling: for continuous beams where hogging dominates in an intermediate span (NEN-EN 1993-1-1 NB, Figure NB.6, formula NB.7), the sign of C2 was reversed in the critical moment (formula NB.NB.2). Corrected.help desk #3162
    • ImprovedCalculation change: Bolts: the tensile stress areas As of M33 to M52 are updated.help desk #7
    • ImprovedFoundation pile: the adhesion level can now be set for every CPT; it was only initialised for the first one.help desk #3159
    • ImprovedThe design working life is printed in the output.help desk #3081
    Release notes (PDF)XConstruct (PDF)

  14. XFEM4U2027-03-01 Calculation change

    • NewExcel round trip: export nodes, beams, load cases and combinations, beam and node loads or node displacements to Excel, edit them there and import them back.help desk #1861, #2322, #2324, #2359, #2630
    • NewExport to Tekla Structures: an XFEM4U model can now be converted into a Tekla model, through an XML import tool made by Tekniq Solution.
    • ImprovedCalculation change: Surface loads: in certain cases the beam loads were not generated correctly. Fixed.help desk #16
    • ImprovedCalculation change: Lateral-torsional buckling: C2 is now extrapolated for loads on the top flange, because C2 assumes the load at the centre of gravity of a flange. The notes expect a small effect.help desk #5
    • ImprovedCalculation change: Lateral-torsional buckling: the maximum moment of a beam segment between fork supports or lateral restraints could be taken from outside that segment, so the unity check could come out too high. Fixed.help desk #6
    • ImprovedLoad generator: a new Delete loads button removes generated load cases and combinations.help desk #3119
    Release notes (PDF)XFEM4U (PDF)

  15. XFEM4U2027-02-01

    • ImprovedWord output: fixed a crash, and images are now as sharp as in the PDF output.help desk #3182
    • ImprovedTekla import via XML works again, and the IDEA StatiCa export no longer crashes on profiles such as THQ.help desk #3186
    • ImprovedDialogs and the print preview display in full on high-resolution screens.
    Release notes (PDF)XFEM4U (PDF)

  16. XFEM4U2027-01-01 Calculation change

    • NewRuns on .NET 10. A start dialog lists recent models with a preview image, which is also saved as a PNG in the project folder.
    • NewXFrame2D models can be converted to XFEM4U models via XML export and import.help desk #2864
    • NewSurface loads and panels: set the tolerance above and below the plane that decides which beams lie in it.help desk #3009
    • NewView wizard: generate several views for the report from one camera position.help desk #3127
    • NewDutch national annex NEN-EN 1992-1-1+C2:2011+A1:2015/NB+A1:2020+A2:2025 added.help desk #2866
    • NewThe stirrup spacings the design chooses from can now be set by the user.help desk #3007
    • ImprovedCalculation change: Wind load generator: for wind parallel to the ridge, the distance e/4 for zone F is now measured from the eaves instead of from the ridge.help desk #3114
    • ImprovedCalculation change: Mesher: plates with edge beams on an elastic foundation were meshed irregularly, and the mesher sometimes hung. Improved.help desk #3096
    • ImprovedCalculation change: The design of stirrups is improved.help desk #2862
    • ImprovedCalculation change: Lateral-torsional buckling: for continuous beams where hogging dominates in an intermediate span (NEN-EN 1993-1-1 NB, Figure NB.6, formula NB.7), the sign of C2 was reversed in the critical moment (formula NB.NB.2). Corrected.help desk #3162
    • ImprovedCalculation change: The additional deflection is now calculated from the total final deflection including creep.help desk #3047
    • ImprovedThe code check is on by default for new projects.help desk #3126
    • ImprovedA deflection that exceeds its limit is now printed in the output as an error in red, not as a warning.help desk #2688, #3015
    • ImprovedThe design working life is printed in the output.help desk #3081
    • ImprovedLateral-torsional buckling: a beam group can now combine different profiles, so the length between fork supports (Lg) can be determined.help desk #3033

    The English release notes print 23-03-2025; the Dutch notes print 23-03-2026, which fits the order of the versions.

    Release notes (PDF)XFEM4U (PDF)

  17. XBeam2D2027-02-01

    • ImprovedOrdering and paying online from the program works again.
    Release notes (PDF)XBeam2D (PDF)

  18. XConstruct2027-02-01

    • ImprovedOrdering and paying online from the program works again.
    Release notes (PDF)XConstruct (PDF)

  19. XFrame2D2027-02-01

    • ImprovedOrdering and paying online from the program works again.
    Release notes (PDF)XFrame2D (PDF)

  20. XBeam2D2027-01-02patch

    • ImprovedThe factors ψ0, ψ1 and ψ2 are back in the load case table and can be entered again.help desk #3072
    • ImprovedA deflection that met its limit was shown in red in the output. Fixed.help desk #3015, #3071
    Release notes (PDF)XBeam2D (PDF)

  21. XFrame2D2027-01-02patch

    • ImprovedThe factors ψ0, ψ1 and ψ2 are back in the load case table and can be entered again.help desk #3072
    • ImprovedA deflection that met its limit was shown in red in the output. Fixed.help desk #3015, #3071
    Release notes (PDF)XFrame2D (PDF)

  22. XConstruct2027-01-01

    • ImprovedMoment connection: the input now checks that the compressive stress in the column stays below the yield strength.help desk #2811
    • ImprovedThe bottom cover is printed correctly; for slabs, the number of stirrup legs and the strut angle are no longer printed.help desk #3053
    • ImprovedThe Word output no longer contains a licence-key message from Syncfusion.help desk #3068

    Both editions of the release notes print 14-01-2025; the version sits between the releases of 7 and 19 January 2026.

    Release notes (PDF)XConstruct (PDF)

  23. XBeam2D2027-01-01 Calculation change

    • NewRuns on .NET 10. A start dialog lists recent models with a preview image, which is also saved as a PNG in the project folder.
    • NewDutch national annex NEN-EN 1992-1-1+C2:2011+A1:2015/NB+A1:2020+A2:2025 added.help desk #2866
    • NewThe stirrup spacings the design chooses from can now be set by the user.help desk #3007
    • ImprovedCalculation change: The shear force coverage line of a slab over several supports was not determined correctly. Fixed.help desk #2853
    • ImprovedCalculation change: The design of stirrups is improved.help desk #2862
    • ImprovedCalculation change: The additional deflection is now calculated from the total final deflection including creep.help desk #3047
    • ImprovedThe limits for total and additional deflection, previously fixed, can now be set in the beam data.help desk #3026
    • ImprovedA deflection that exceeds its limit is now printed in the output as an error in red, not as a warning.help desk #2688, #3015
    Release notes (PDF)XBeam2D (PDF)

  24. XFrame2D2027-01-01 Calculation change

    • NewRuns on .NET 10. A start dialog lists recent models with a preview image, which is also saved as a PNG in the project folder.
    • NewXFrame2D models can be converted to XFEM4U models via XML export and import.help desk #2864
    • NewChosen beams can be excluded from the code check.help desk #2787
    • ImprovedCalculation change: Moment connection: the compressive stress in the column is now limited to the yield strength.help desk #2811
    • ImprovedCalculation change: The additional deflection is now calculated from the total final deflection including creep.help desk #3047
    • ImprovedA deflection that exceeds its limit is now printed in the output as an error in red, not as a warning.help desk #2688, #3015
    • ImprovedLateral-torsional buckling: a beam group can now combine different profiles, so the length between fork supports (Lg) can be determined.help desk #3033
    Release notes (PDF)XFrame2D (PDF)

  25. XConstruct2026-07-03

    • ImprovedReading the login.ini file works again.help desk #3062
    Release notes (PDF)XConstruct (PDF)

2025

  1. XConstruct2026-07-02 Calculation change

    • ImprovedCalculation change: Concrete section: with no stirrups entered (Asw = 0), the shear reinforcement was not checked. Fixed.help desk #3025
    • ImprovedMerging PDF files works again.help desk #3038
    Release notes (PDF)XConstruct (PDF)

  2. XConstruct2026-07-01 Calculation change

    • NewThe first Struct4U program on .NET 10.
    • NewShear connection module for hinged connections: with a fin plate, a short end plate or angle cleats.help desk #1481, #2506, #2756
    • NewMoment connection: two new types with the beam resting on the column.help desk #708, #911, #1583, #1740, #2392, #2656
    • NewDutch national annex NEN-EN 1992-1-1+C2:2011+A1:2015/NB+A1:2020+A2:2025 added.help desk #2866
    • ImprovedCalculation change: Concrete column: the material factor for concrete in the fire situation changed from 1.50 to 1.00.help desk #2798
    • ImprovedCalculation change: Concrete column joint: for mortar joint types a, b and c, v is now increased by 20 mm, in line with NEN-EN 1992-1-1, 10.9.4.3(8).help desk #2800
    • ImprovedCalculation change: Concrete column, biaxial bending: the minimum eccentricity for bending about the z-axis was calculated with the height h instead of the width b. Fixed.help desk #2888
    • ImprovedCalculation change: Concrete section: the cracking moment MRk was not always right, because the bar spacing s used for the maximum steel stress was wrong. Fixed.help desk #2999
    • ImprovedCalculation change: Steel column: the moment distribution along the column, and so the factor Cmy of NEN-EN 1993-1-1 Table B.3, was not determined correctly. Fixed.help desk #2868
    • ImprovedCalculation change: Brace connection: the block tearing check of the bolt group was missing for angles and for strips with one bolt row. Added.help desk #3010
    • ImprovedCalculation change: Joists: the reduction factor kr was not applied to Vz,Ed for a point load. Fixed.help desk #3003
    • ImprovedPurlin and joists: the deflection limit, fixed at 0.004L, can now be set.
    Release notes (PDF)XConstruct (PDF)

  3. XConstruct2026-06-04patch

    • ImprovedThe Word output is improved.help desk #2866
    Release notes (PDF)XConstruct (PDF)

  4. XConstruct2026-06-03patch Calculation change

    • ImprovedCalculation change: Concrete column: the joint calculation for a wall was incorrect. Fixed.help desk #2852
    Release notes (PDF)XConstruct (PDF)

  5. XBeam2D2026-02-03patch

    • ImprovedOpening an example at the first start-up works again.
    Release notes (PDF)XBeam2D (PDF)

  6. XFrame2D2026-02-03patch

    • ImprovedOpening an example at the first start-up works again.
    • ImprovedWord output: fixed a crash.help desk #2870
    Release notes (PDF)XFrame2D (PDF)

  7. XBeam2D2026-02-02patch

    • ImprovedConcrete deflection: fixed a crash for spring-supported beams. Concrete deflections are not calculated for beams on an elastic foundation or on springs.help desk #2842

    The English release notes print 24-06-2025; the Dutch notes print 2-09-2025, which fits the order of the versions.

    Release notes (PDF)XBeam2D (PDF)

  8. XConstruct2026-06-02patch

    • ImprovedPurlin: the variable load was not saved. Fixed.help desk #2840
    Release notes (PDF)XConstruct (PDF)

  9. XFrame2D2026-02-02patch

    • ImprovedFixed crashes when exporting to Word and after an XML import.help desk #2836, #2839
    Release notes (PDF)XFrame2D (PDF)

  10. XBeam2D2026-02-01

    • NewOutput as a Microsoft Word document (.docx): every Eurocode formula in the report becomes a Word equation.
    • NewCopying a beam now also copies its beam loads.help desk #2813
    Release notes (PDF)XBeam2D (PDF)

  11. XConstruct2026-06-01 Calculation change

    • NewOutput as a Microsoft Word document (.docx): every Eurocode formula in the report becomes a Word equation.
    • ImprovedCalculation change: NEN 8700: the national annex changed when a project was reopened. Fixed.help desk #2782
    • ImprovedCalculation change: Brace connection, strip with two bolt rows: the bolt spacing e2 was not determined correctly, so the bearing resistance came out too high. The block tearing check of the bolt group is added.help desk #2809
    • ImprovedConcrete section: stirrups can now be entered by the user.help desk #2810
    • ImprovedAerated concrete: the block grades are now G2, G4, G6 and G8.help desk #2781
    • ImprovedPile output: Rb;cal and Rs;cal were printed in the wrong column, and the output for different pile sizes was wrong. Fixed.help desk #2802, #2824
    Release notes (PDF)XConstruct (PDF)

  12. XFEM4U2026-03-01 Calculation change

    • NewOutput as a Microsoft Word document (.docx): every Eurocode formula in the report becomes a Word equation.
    • ImprovedCalculation change: The envelope (moment and shear force lines and so on) was not determined correctly when a combination was switched off in the combination table. Fixed.help desk #2828
    • ImprovedPanels and surface loads: a new point is only added to the contour when it lies in the plane, so no warped planes are created by accident.
    • ImprovedThe graphical display of beam deflections in the global x, y and z directions is corrected.help desk #2823
    Release notes (PDF)XFEM4U (PDF)

  13. XFrame2D2026-02-01 Calculation change

    • NewOutput as a Microsoft Word document (.docx): every Eurocode formula in the report becomes a Word equation.
    • NewCopying a beam now also copies its beam loads.help desk #2813
    • ImprovedCalculation change: Lateral-torsional buckling: the restraint distances of a beam group defined with node numbers were not determined correctly. Fixed.help desk #2788
    Release notes (PDF)XFrame2D (PDF)
“We also definitely see that you guys are doing a good job regarding feedback from users. Indeed, we notice that most things are already added the next update!”
A user on the updates STEP Engineering
2Versions

How versions and dates read

Version numbers run about a year ahead of the calendar: XFEM4U 2027-04-02 came out on 4 August 2026. A patch fixes the release before it.

Three dates in the release notes since August 2025 contain a typo. We corrected them and say so at the entry.

3Earlier

Earlier releases

The release notes go back to November 2022. Entries before August 2025 are in the PDFs.

ProgramReleasesFirst in the notesLatestRelease notes
XFEM4U282023-01 · 3 Nov 20222027-04-02 · 4 Aug 2026PDF
XFrame2D252023-01-01 · 3 Nov 20222027-07-01 · 20 Aug 2026PDF
XBeam2D212023-01 · 3 Nov 20222027-05-02 · 19 Aug 2026PDF
XConstruct212023-01 · 3 Nov 20222027-03-01 · 15 May 2026PDF

XSpreadsheets has no release notes of its own. The workbook on the download server was last updated on 26 July 2026.

Update and recalculate.

The programs tell you when a new version is out. The download stays free.

Free download · first hour free · €100 welcome credit when you register · then pay per use · no credit card · Windows

Download freeVerification