Web Resources data parameter causing server error

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Posted on by Dave Potts Brit Eng

All instances, Production and Sandbox, in our tenant have suddenly started throwing HTTP 400 server error for any web resources with a &data=whatever parameter added. We have done no code deployments and the pages were working previously. We have a ticket open with Microsoft for this.

Anyone seen this behaviour before?

Regards,

Dave.

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a33ik 84,323 Most Valuable Professional on at

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RE: Web Resources data parameter causing server error

Dave,

I believe that's mostly because Microsoft fixed some their internal bug.
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Dave Potts Brit Eng 75 on at

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RE: Web Resources data parameter causing server error

We've found the problem and it is an odd one. We had a bug in our javascript code that put &data= as the first parameter after the web resource. This is a bug. It should be "?data=" not "&data=". However the web resource has been loading fine with the & for at least two years. Yesterday it stopped loading.

We're fixing our bug, but why on earth did it work for so long?
a33ik 84,323 Most Valuable Professional on at

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RE: Web Resources data parameter causing server error

Hello,

I just checked instance I have access to and everything looks good so far. What datacentre are you at? I checked NA one.