Revit cannot find default servers for the external services

[Anonymous]

-Running Revit 17 as a admin

17.0.1150.0

20171017_0315

2017.2.3

Keep getting this error involving Duct Fitting/ Accessory Pressure Drop Calculators by vendor ADSK, Pipe Fitting Calcs, Duct Pressure Calcs, Pipe Pressure Drop Calcs, and Plumbing Flow Calc. whenever I open Revit.

Error seems minors but when I open a shared central file, it gives me notice to replace the calculators. If i keep going, it gives me a Missing Add-Ins Error and it affects my ability to use Keynotes weirdly.

I've done a full reinstall but no luck.

Any advice?

[Anonymous]

Remove all your add-ins to another folder and start Revit and see if you still get the error.  Then shutdown Revit and add your add-ins one at a time starting/closing Revit in between to see if it is an add-in error.

Or did you already try installing an add-in that may not be available anymore?

[Anonymous]

even after removing all my add-ins, it still gives me the error..

[RobDraw]

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@Anonymous wrote:

-Running Revit 17 as a admin

17.0.1150.0

20171017_0315

2017.2.3

Keep getting this error involving Duct Fitting/ Accessory Pressure Drop Calculators by vendor ADSK, Pipe Fitting Calcs, Duct Pressure Calcs, Pipe Pressure Drop Calcs, and Plumbing Flow Calc. whenever I open Revit.

Error seems minors

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This is far from minor. Actually, I would be very concerned about it and make it a priority to get it fixed ASAP. I wouldn't even continue modeling.

Did you follow the directions provided by Autodesk for completely uninstalling Revit?

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2019/EN...

[BHamlet]

This problem still persists with the newest versions of Revit.

I think I have found the cause of the problem, so we can avoid it. It is not as good as a solution, but with diligence, avoiding the problem will save countless hours of uninstall / reinstall.

I believe the problem occurs when a newly installed version of Revit is upgraded without having first being run on the machine. That first run must set some paths on the users specific computer that the initial installation either did not or could not.

How to avoid the problem:

When you have a new install of Revit, make sure you open the program after install before you upgrade with the desktop application, even if there are no upgrades available. If the user doesn't open it before upgrades come out, this error will occur. Just open to the home screen and then close.