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I have a tedious problem with Acrobat Pro X when I want to apply a timestamp to a document I always get that error.

I have configured VeriSign TSA server and it returns that error. I have tried Comodo CA and Aruba but all three returned the same exact error. My PDFs are now signed without a certified timestamp and this is a problem for me.

I'm obliged to sign documents and apply a certified timestamp at the same time.

This seems to be a common error in Acrobat, but I found no solution to it.

Can somebody help me?

[Update] Thanks to Wireshark I found this


POST /scripts/timstamp.dll HTTP/1.1
Accept: */*
Content-Type: application/timestamp-query
Content-Length: 53
Character-Encoding: binary
User-Agent: PPKHandler
Connection: Keep-Alive
Cache-Control: no-cache



HTTP/1.1 200 OK
Server: Netscape-Enterprise/4.1
Date: Fri, 13 Jul 2012 16:01:42 GMT
Content-type: application/timestamp-query
Content-length: 39

error handling request, status = 0x9300

I don't know if the request is well-formed

Screenshot of ASN.1 decode

share|improve this question

The time stamp server is not free of charge. So, this servers reject your request. you can use free time stamp servers.

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Can you give an example of such a free time stamp server that djechelon is able to solve his problem? – FiveO May 1 '13 at 14:43
AFAIK Verisign's TSA is free of charge. And Aruba is not free of charge but I have paid for that! – usr-local-ΕΨΗΕΛΩΝ May 1 '13 at 15:25

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