I have student licences i have been training to solve that problem by uninstall and reinstall C
++2015-2019 and i still having the same problem .
I watched lots of videos non of them seems to work
I am
in the medal of a project and i am behind because of that issue that please help
@Anonymous
Without your installation log file we can only speculate what the issue is at this point. So attach your installation file here so we can review it.
Posting info: Sometimes the installation log file contains the serial # that was assigned to you. Open your log file using Windows Notepad and perform a search on "/SN". Depending on the number of installation attempts, your serial # may be located throughout the log file. If present, remove or "X" out your serial # prior to posting.
Mark Lancaster
& Autodesk Services MarketPlace Provider
Autodesk Inventor Certified Professional & not an Autodesk Employee
Likes is much appreciated if the information I have shared is helpful to you and/or others
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Hello @Anonymous
In some cases the cause of the error 1603 is the ADSKLicenisng that fails to install or to start, First can you go to the following folder :C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing, there should be the latest version of the ADSKLicensing, the 10.1.1. If you have an older version you can install the latest one from these link. Once you install it can you check in the Service Tab if there is a service called Autodesk Desktop Licensing Service, if the service is not running the try to set it to automatic and start the service. After these try the Installation of Revit again.
Regards
thank you very much ,
for the help i had fallowed the your advice and the steps that you had provided . but now after trying to reinstall the auto desk revit 2021 .
it is showing the fallowing message . 
