Please try the following. Close all programs then:
1. Rename the following file by adding a .bak extension at the end of the filename.
Windows XP C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*_tsf.data
(note this is a hidden file and you might need to enable show hidden files under folder options)
This file contains all activations for all 2010 and newer Autodesk products. You will need to re-register all your products if this file is renamed/deleted.
2. Restart AutoCAD and it will automatically re-register via Register Today and it will start up as expected. A new adskflex_*_tsf.data file will be created when you re-register your product.
If you are prompted for manual activation please contact usat 1-800-551-1490 press 1 for English and press 1 again for StandAlone.
If the issue persist after performing the above steps please review the following knowledge base article poreviosuly shared by Travis on an earlier post Reply:
Let us know the results.
Hello. Your blank screen is likely a result of having Internet Explorer 10 installed. Uninstall it.
Thank you for taking part in our community!
Thank you for information Byron,
I checked for C:\ProgramData\FLEXnet\adskflex_*_tsf.data and could not find this exact file. How should I re-register my products?
I tried to do as suggested, but there is no "FLEXnet\adskflex_*_tsf.data" in the folder C\ProgramData.
I am using Windows 7.
Do you have any other suggestions?
BTW, I'm trying to get the licensing window on the screen for 3ds Max. I get the serial number window, and I get it to send me an activation code, but I never get a window for entering the activation code. Instead, I just get the serial number window to pop up again.
Please send me a Private Message (click on my joane.bonghanoy profile name and then “Send this user a private message”) with your Serial Number and a screenshot of the error so I can check on my end.
Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register
Start with some of our most frequented solutions to get help installing your software.