When get the below errors I am logged in as host and the only thing odd is that my profile picture next to 'login' is dark grey for awhile. If I then refresh I see my picture again but during this event I see in the event logs on my Windows Server 2012 R2 the following Events:

 ASP.NET 4.0.30319.0 Event Id 1195 TransmitFile failed. File Name: D:\Shares\Websites\Server Essentials\App_Data\_imagecache\D8D698DDAE249938E359F722CE4D6EEE38F130D1.tmp, HRESULT: 0x80070002

and

Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 4/8/2016 6:29:27 PM
Event time (UTC): 4/8/2016 4:29:27 PM
Event ID: 12d959c989abb49fb94bd8a40c5143469
Event sequence: 8462
Event occurrence: 4
Event detail code: 0
 
Application information:
    Application domain: /LM/W3SVC/2/ROOT-555
    Trust level: Full
    Application Virtual Path: /
    Application Path: D:\Shares\Websites\xxxx\
    Machine name: xxx
 
Process information:
    Process ID: 1708
    Process name: w3wp.exe
    Account name: IIS APPPOOL\xxx
 
Exception information:
    Exception type: COMException
    Exception message: The handle is invalid. (Exception from HRESULT: 0x80070006 (E_HANDLE))

Request information:
    Request URL: http://www.xxx.com/DnnImageHandler.ashx?mode=profilepic&userId=1&h=32&w=32
    Request path: /DnnImageHandler.ashx
    User host address: 192.168.150.42
    User: xxx
    Is authenticated: True
    Authentication Type: Forms
    Thread account name: IIS APPPOOL\xxx
 
Thread information:
    Thread ID: 15
    Thread account name: IIS APPPOOL\xxx
    Is impersonating: False
    Stack trace: 

 I have found that 0x80070006 means that the file cannot be found but when I look in the imagecache it is there. Is this some bug in the DnnImageHandler?

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Though the error shows .Net 4.0 in the Host Settings it says 4.6 and when I look on the server the binaries are also 4.6. So, yes I am on .Net 4.5.1 or later

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www.server-essentials.com is a community for IT Consultants and Business Owners who, themselves, take care of the IT infrastructure and Employees who do that little extra in the company to keep things running. Our forum is for discussing all things ‘IT’ and more. Our documentation is top notch and written by and for the community. Join now at https://www.server-essentials.com/secure-registration

It looked like it was solved but it is not. I still get these errors in the event log as soon as somebody adds or updates a profile picture...how knows what is going on?

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www.server-essentials.com is a community for IT Consultants and Business Owners who, themselves, take care of the IT infrastructure and Employees who do that little extra in the company to keep things running. Our forum is for discussing all things ‘IT’ and more. Our documentation is top notch and written by and for the community. Join now at https://www.server-essentials.com/secure-registration