Help to FIX: Error message ('This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.')

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I have run into a problem where i try to compile my webapplication and i get an error. The full error is

Source File 'C:\Users\gaj\documents\visual studio 2010\Projects\SVADWeb\SVADWeb\Health Physics\Tracking.aspx.cs' could not be opened ('This Implementation is not part of the Windows Platform FIPS validated crytographic algorithms.')

Everything was ruinning fine up untill today, i made some changes to my code but nothing major and i dont belive i have made changes to visual studio. i did notice that if i close the file then it would build but if its open for edit in VS 2010 i get the error. I also get it sometimes with the file closed too. Any help would be great thanks.

Also if i delete the file .aspx, aspx.cs and aspx.designer.cs then i am able to build. Then if i include the files i cant build. I tried to add a new webform and copy the contetnts from file a to file B. This gives me an error aswell but i have nothing in the cs file i only copied over the aspx file. i dont know if its because i am using the ajaxcontrolkit and telerik controls.

i am using visual studio professional 2010 on vista and my web server is windows server 2003
.

Posted 20-Apr-11 9:00am

ajep

Updated 20-Apr-11 9:01am

v2

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2 solutions

Solution 1

See http://social.msdn.microsoft.com/Forums/en-US/clr/thread/7a62c936-b3cc-4493-a3cd-cc5fd18b6b2a/[^]

Posted 20-Apr-11 9:08am

Nish Nishant

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ajep · Accepted Answer · 2011-04-21T05:39:00

Solution 2

This worked for me

HKLM\SYSTEM\CURRENTCONTROLSET\CONTROL\LSA set DWORD FIPSALGORITHMPOLICY = 0

Posted 21-Apr-11 5:39am

ajep

Comments

Nish Nishant 21-Apr-11 11:41am

Yeah, that's one of the solutions mentioned in the MSDN thread I linked above.

Member 13018165 22-Feb-17 21:27pm

Thanks guy's the HKLM key worked for me.
I wonder how it got set ?? Mark.

Flaviano Galdino 6-Feb-18 9:58am

This solution helped me to solve a problem with SignalR. There was an internal error occurred when a webclient while trying to connect. At thme moment that webclient was try negociate (SignalR: Negotiating with). The server respond with this error: 'Failed to load resource: the server responded with a status of 500 (Internal Server Error)' Windows server 2012.

Thanks a lot!