cryptographicexception failed to format passed in token value - Using Umbraco 7

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marcelh 171 posts 471 karma points

Nov 17, 2015 @ 15:08

CryptographicException: Failed to format passed in token value

Since today (or yesterday) I see the message in the log. Running Umbraco 7.2.8. I figured it must have something to do with a user logged in into the backend, but can't what's causing it. Anyone that clarify the error?

015-11-17 15:54:06,802 [6] ERROR Umbraco.Web.Mvc.AdminTokenAuthorizeAttribute - [P5020/T1/D2] Failed to format passed in token value
System.Security.Cryptography.CryptographicException: Error occurred during a cryptographic operation.
   at System.Web.Security.Cryptography.HomogenizingCryptoServiceWrapper.HomogenizeErrors(Func`2 func, Byte[] input)
   at System.Web.Security.FormsAuthentication.Decrypt(String encryptedTicket)
   at Umbraco.Core.StringExtensions.DecryptWithMachineKey(String value)
   at Umbraco.Web.Mvc.AdminTokenAuthorizeAttribute.AuthorizeCore(HttpContextBase httpContext)

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teus 42 posts 74 karma points

Jul 22, 2016 @ 09:04

0

I see this error after submitting a Umbraco.Forms specific form on a different server then where the form was origionally was created. ( see "Customizing for a specific form" on https://our.umbraco.org/projects/umbraco-pro/contour/documentation/developer/Custom-Markup/ )

It seems that the value of is encrypted differently on the other server.

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Jeavon Leopold 3074 posts 13632 karma points MVP 11x admin c-trib

Jul 29, 2016 @ 16:55

0

I'm seeing this logged also for every form submission, did you find a solution?

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Mati 4 posts 74 karma points

Feb 21, 2018 @ 11:11
1
I know it's old post but with no answer so maybe will be helpfull for someone

My situation:

Problem:

I saw this error with frequency one per minute on my production serwer.

What I did:

1) I've changed web.config
```
   <authorization>
      <allow users="*" />
    </authorization>
```
2) In umbracoSettings.config parameter - umbracoApplicationUrl was set to my production url : https://xxxxx/umbraco

But I also have dev environment (with the same value in umbracoApplicationUrl pointing to production backoffice)

I've changed umbracoApplicationUrl on my dev env to dev backoffice url.

Result:

I'm no more facing this issue
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