CRM 2016 404 error before any report runs

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Posted on by Community Member Microsoft Employee

When running any report in Chrome a 404 error shows up for a second or two before the report starts to render. The report runs fine after the 404 error but I haven't been able to find a reason as to what causes it. I ran fiddler and found that the error also happens in IE but does not display it like Chrome does. Issue is reproducible in Dynamics CRM 2016 On-Premise 8.1.0.359 and 8.2.1.176. This happens across multiple production and test environments.

URL: https://{crmorg}/crmreports/viewer/viewer.aspx?action=run&context=records&helpID={reportname}.rdl&id=%7b1c52a580-b9ef-402f-9869-c975a8f543f7%7d&records=%7b257F1F03-2C11-49EB-9DEA-EB8CB24E8C8E%7d&recordstype=1

Has anyone seen this before? If so, have you been able to fix it?

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Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

Microsoft told us this was an acceptable workaround and is being fixed in 8.2.2.166
Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

Michael,

Thank you very much for this suggestion. I tried it on two of our test environments and it worked! It looks like the change took effect immediately without the IISReset but I did that anyways for good measure.

Thanks again,

Robert
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Michael Steiner 25 on at

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RE: CRM 2016 404 error before any report runs

Hello,

until yesterday we had the same problem. We are using MSCRM 2016 version 8.1.1.1005.

Our system house contacted Microsoft and they gave us a work around with the following instructions:

On CRM server go to C:\Program Files\Microsoft Dynamics CRM\CRMWeb\CRMReports\viewer

On viewer.aspx on line 221, check the code. Is it the code oFrame.setAttribute('src', '" + Mscrm.CrmUri.create("/_static/blank.htm").toString() + "'); ?

If yes,

Delete

Frame.setAttribute('src', '" + Mscrm.CrmUri.create("/_static/blank.htm").toString() + "');

Add

Frame.setAttribute('src', Mscrm.CrmUri.create("/_static/blank.htm").toString());

Do an IIS reset

We did that on test environment and in the meantime also on production environment and it works fine. The 404 error is no longer there.

This is not a final solution. By making a system update we would loose the changes. It is not clear yet, if there will be a hotfix or something like that.

I hope this helps you, too.

Update: I forgot to tell that you have to delete the cache and cookies in web browser.

Best regards,
Michael
Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

I got the same error!
Hervé ROBILLARD 615 on at

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RE: CRM 2016 404 error before any report runs

Hello Pawel,

For me the same. I put CRM traces and rs logs here : overshare.overlapgroupe.fr/.../fibaha

Hervé
Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

Hi Radu,

The server in which I'm doing all my testing is a single all in one (CRM Front End/Back End, SQL, Report services).

Thanks,

Robert
Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

Hi Pawel,

I did check the CRM traces and report server logs but there are no errors logged there. However, when I tried running reports from the CRM server in Chrome I was able to get a more detailed error.

This is the error:

Per the suggestion on the error I tried setting 'allowDoubleEscaping' to true in the CRM application's web.config to see what would happen. Changing this option is not recommended since it opens up a security hole allowing code injection. Did an IISReset and restarted the report service. After this I started to receive a slightly different 404 error.

Thanks,

Robert
Radu Chiribelea 6,667 on at

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RE: CRM 2016 404 error before any report runs

Hi Robert,

Are you using an NLB for your CRM Server? If so, can you please make sure that the affinity is set to single? See technet.microsoft.com/.../bb687542.aspx for more details. Different NLB use different naming for this.

Thanks,

Radu
Community Member Microsoft Employee on at

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RE: CRM 2016 404 error before any report runs

Hello , As pawel suggested ,please can you please put the CRM traces & reporting sever logs?

best Regards,

david
tw0sh3ds 5,600 on at

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RE: CRM 2016 404 error before any report runs

Have you checked CRM Traces and Reporting Services logs?