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CAD tip CAD tip # 9991:

Question CAD 
 %  platform  category 
Q - question

Error: Key not valid for use in specified state

A - answer The error message (dialog) "Key not valid for use in specified state" ("Schlüssel ist im angegebenen Status nicht gültig") may appear when installing a new software application, its service pack or hotfix.

This is a message from the Windows cryptographic system. Try to temporarily rename the folder (it is set as Hidden; Windows recreates a new one)):

c:\Users\USERNAME\AppData\Roaming\Microsoft\Crypto\RSA

and retry the installation.

ACADInvRevit
100% Win7,Vista,Win2008  CAD 
4.9.2014    4594×  
applies to: AutoCAD · Inventor · Revit ·

See also:
Tip 12248:How to remove fillet or chamfer from a 3D solid?
Tip 11145:AutoCAD: Customization file load failed.
Tip 8209:How to install nVidia Performance Driver on a localized or vertical version of AutoCAD?
Tip 7151:Error 2738 while installing Design Review (or other app).
Tip 7085:Error: expected font (xxxx) is not available.


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