Trend Antivirus has been known to cause crashes within Revit, usually with a saving error that says "Encountered a sharing violation while accessing...". We have also seen instances of Trend blocking Revit from launching.
When looking at where that file path is going, it’s been linked to Trend blocking the Temporary Folder, which Revit heavily relies on when launching, saving, syncing, etc.
In most recent cases, clients who were experiencing issues with Revit (who were also using Trend), all issues were resolved by disabling Trend. Most people have moved off of Trend early 2018 as it caused Revit to act up.
- Here is the article on it: https://autode.sk/2ELa9vi
- The link has a supplementary link for other configurations for Trend that perhaps your IT can help you do.
You can also try these whitelist options so that Trend causes fewer issues for you:
- White list: https://autode.sk/2s6kSOp
- There's a few extra exclusions listed in this link as well: https://bit.ly/2rrxlvC
Trend is a bit of a tricky one as they don't list too much on their website for fixes, I believe that's why most people switched to other antivirus software (at least in the AEC bubble).
Trend had the following listed on their website when you search for "Revit". Instructions include excluding Trend from scanning the “Temp” folder.
- Trend article: https://bit.ly/2tKdiJv
If switching antivirus' isn't an option, then hopefully the exclusions should help alleviate the problems you are facing.
Site Designer / Precast
Autodesk has plug-ins called “Site Designer” and “Precast”, both of which have been known to cause crashing within Revit. Site Designer is definitely the bigger culprit of the two, however, if you don’t need these plug-ins, we highly recommend uninstalling them.
Many people install it due to it being available as a part of the “updates”, so people think it’s necessary.
If you’ve noticed your Revit crashing after closing the last tab of a project or after closing a family after editing, this is often the case of Site Designer and a bug within it that’s causing this issue for you.
We have spoken to the Autodesk Development Team and there has not been a fix for that crashing, unfortunately, other than to completely uninstall the plug-ins through the Control Panel.
You can also quickly test this without uninstalling (perhaps if you need those two plug-ins at times) by going into the Plug-In folder and moving them out of that folder temporarily. When you relaunch Revit the next time, they will be unloaded and won’t affect Revit. Once you need to use them for your project, you can put them back in and use them.
- Revit plug-ins are found here: C:\ProgramData\Autodesk\Revit\Addins\
- You will then see all years of Revit’s that you have. Open that year of Revit and move the Site Designer file.
- Tip: Copy/paste that UNC path to get there faster as Program Data is a hidden Windows folder.