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 Cognos report throws error for a single user : 'Bad Request - Invalid Verb'

Madhu Lodugu's profile image
Madhu Lodugu posted 05/20/26 08:57 AM

A new report in Cognos is throwing this error for a specific user. I am not facing this and also checked with a couple of other users who could run the same report successfully. Please check the attachment to see the error (HTTP Error 400. The request verb is invalid). Please suggest what can  be done to resolve this.

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Best Regards,
Abbas Alnamar's profile image
Abbas Alnamar IBM Champion posted 05/20/26 10:06 AM

Hello Madhu,

Please try having the user clear their browser cache and cookies entirely, or test running the report using an Incognito/Private window, as HTTP 400 errors are typically caused by corrupted session data or oversized browser headers rather than a permission issue. If the error still occurs in Incognito, please check if they can run other HTML reports successfully, and try copying this specific report into their "My Content" folder to see if they can execute it from there. This will help us isolate whether the root cause is a localized browser glitch or a profile-specific issue.

Thank you,

Abbas

Mack L's profile image
Mack L posted 07/22/26 01:27 AM

Hi @Abbas Alnamar & community,

I encountered this error again with another new report. This time two users have reported facing this error. They are facing this even after clearing cache and cookies in the browser. I have not yet asked them to check in incognito mode of browser. They are able to run other Cognos reports without any problem.

Could anybody suggest how this can be fixed.

Best Regards,

Mack L's profile image
Mack L posted 07/23/26 07:14 AM

Hi All,

The issue is resolved!. We just had to change the name of the report which was for ex, 'ABM 16 Stock' to something like Stock ABM16 or any other name. I Do not have an explanation for this but it worked. It was not browser, webserver gateway, or security related.

Best Regards,

Paul Mendelson's profile image
Paul Mendelson IBM Champion posted 07/24/26 02:48 AM
this is fascinating. The error invalid verb means the request Cognos was receiving from the browser was malformed. The verb means the method of the request was not recognized. It's usually either PUT, GET, POST, or DELETE, but there are a few others. Does this happen only when the name of the report is "ABM 16 Stock"? If you make a new report with that name does it still happen? If you close, edit, then save, does that happen? If it does, can you open the network tab and copy the request as fetch?
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This would include the full report xml, so please only do this with a new report if it's causing the problem. Feel free to also strip out any identifying URLs 
Mack L's profile image
Mack L posted 07/24/26 05:59 AM

Hi @Paul Mendelson,

It is a new report that we are talking about. The issue is that not all of us are facing it (report throwing the 'invalid verb' error). While two users were getting this error, rest of us are able to run it without a problem. Again, the user who was getting this error was able to run the report successfully in edit mode but not from the report link. Once we changed the name from say 'ABC 16 Stock' to 'Stock16 ABC Report' or 'ABC Inventory', the report works fine for all users. I would like to find out the root cause for this. Can I do it using developer tools of the browser?. Please suggest.

Best Regards,

Paul Mendelson's profile image
Paul Mendelson IBM Champion posted 07/28/26 05:16 PM

@Mack Yeah, the browser developer toolbar is the way to go here. I'd be interested to know what differences there are with this user. Different browser? VPN? Some sort of network sniffer or packet shaper? 

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