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Asked: 2026-05-23T17:34:12+00:00

I’m generating pre-signed urls with AmazonS3 .NET SDK. They were working fine but they

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I’m generating pre-signed urls with AmazonS3 .NET SDK. They were working fine but they have stopped working now. I used to set an Expires date near to year 2038 because I wanted to make them as permanent as posible. I used 2038 because that date is an epoch date and there is the Year 2038 problem (http://en.wikipedia.org/wiki/Year_2038_problem). The SDK doesn’t limit you on the date but it seems that when you access the url it gives you an Access Denied with the following message:

<Message>Invalid date (should be seconds since epoch): 2147500800</Message>

Does anyone know if there are any limits with the Expires date?

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1 Answer

  1. Editorial Team

    It looks like you already know the answer to this.

    A quick test reveals that expiry dates after approximately 03:14 UTC on Tuesday, 19 January 2038 do indeed fail. You’ve run into the bug in the wikipedia article you linked to.

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