Symptoms
When logged in using smart card auth, published resources fail to launch with the following error:
![](https://kb.parallels.com/Attachments/kcs-194828/Smartcard.png)
Cause
The problem is related to the hook of CredUIPromptForWindowsCredentialsW. The behavior is changed in latest Windows builds.
Resolution
1. Open Registry
![](https://kb.parallels.com/Attachments/kcs-194828/Regedit.png)
2. Go to HKCU\Software\Parallels
![](https://kb.parallels.com/Attachments/kcs-194828/HKCU.png)
3. Create a new key - AppServerClientExtra
![](https://kb.parallels.com/Attachments/kcs-194828/AppServer.png)
4. Inside this key, create a new DWORD ShowWinCredU with the value of 1
![](https://kb.parallels.com/Attachments/kcs-194828/Dword.png)
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