https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033647#M215360 <P>Hi,</P> <P>please share the f3d&nbsp; file for reply</P> <P>&nbsp;</P> <P>günther</P> Thu, 26 Feb 2026 13:09:51 GMT g-andresen 2026-02-26T13:09:51Z https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033524#M215356 <P>Why do the constraints work fine within the Edit Constraints tool...(see below)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="constraints 1.png" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1621520i15B4D0AC5F0F75EF/image-size/large?v=v2&amp;px=999" role="button" title="constraints 1.png" alt="constraints 1.png" /></span></P><P>....and when I click OK the constraints break...(see below)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="constraints 2.png" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1621521iF93A2B86936820BB/image-size/large?v=v2&amp;px=999" role="button" title="constraints 2.png" alt="constraints 2.png" /></span></P><P>&nbsp;</P><P>Everything worked fine until about 30 minutes ago. I restarted the computer. I deleted the parts and re-imported them. The same part keeps breaking. Again, it worked fine until recently, and I didn't change any settings.</P> Thu, 26 Feb 2026 11:03:27 GMT https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033524#M215356 tony9RBDC 2026-02-26T11:03:27Z https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033647#M215360 <P>Hi,</P> <P>please share the f3d&nbsp; file for reply</P> <P>&nbsp;</P> <P>günther</P> Thu, 26 Feb 2026 13:09:51 GMT https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033647#M215360 g-andresen 2026-02-26T13:09:51Z https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033649#M215361 <P>It is hard to diagnosis without your model. &nbsp;Please attach it. &nbsp;Open it in Fusion, select the File menu, then Export. &nbsp;If it is a F3Z file you may have to ZIP it in order to attach it.</P> Thu, 26 Feb 2026 13:12:38 GMT https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033649#M215361 jhackney1972 2026-02-26T13:12:38Z https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033723#M215365 <P>Thanks. Attached.&nbsp;</P> Thu, 26 Feb 2026 13:51:36 GMT https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033723#M215365 tony9RBDC 2026-02-26T13:51:36Z https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033839#M215369 <P>You must have one of your assembly components Grounded to Parent for the Constraint to work properly.&nbsp; The Video will show this.&nbsp;&nbsp;</P> <P>&nbsp;</P> <P>If this answers you question, please mark my post as the Accepted Solution, or ask further questions.</P> <P>&nbsp;</P> <P><div class="lia-vid-container video-embed-center"><div id="lia-vid-6389972750112w400h216r300" class="lia-video-brightcove-player-container"><video-js data-video-id="6389972750112" data-account="6057940548001" data-player="default" data-embed="default" class="vjs-fluid" controls="" data-application-id="" style="width: 100%; height: 100%;"></video-js></div><script src="https://players.brightcove.net/6057940548001/default_default/index.min.js"></script><script>(function() { var wrapper = document.getElementById('lia-vid-6389972750112w400h216r300'); var videoEl = wrapper ? wrapper.querySelector('video-js') : null; if (videoEl) { if (window.videojs) { window.videojs(videoEl).ready(function() { this.on('loadedmetadata', function() { this.el().querySelectorAll('.vjs-load-progress div[data-start]').forEach(function(bar) { bar.setAttribute('role', 'presentation'); bar.setAttribute('aria-hidden', 'true'); }); }); }); } }})();</script><a class="video-embed-link" href="https://forums.autodesk.com/t5/video/gallerypage/video-id/6389972750112">(view in My Videos)</a></div></P> Thu, 26 Feb 2026 14:40:08 GMT https://forums.autodesk.com/t5/fusion-support-forum/constraints-are-breaking/m-p/14033839#M215369 jhackney1972 2026-02-26T14:40:08Z