Fields for entering user/password in Timestamp Server configuration dialog disabled

[AnnaHBHB]

Hi there,

we would like to use a time stamping service that requires authentication. Unfortunately the input fields in the corresponding UI are disabled. I managed to set the "is required" flag by setting the bAuthRequired Flag in the registry, but I did not manage to set the required credentials. sPassword and sUser suggest that they are the correct places in the registry, it won't work.

On a system where the Acrobat Reader has not been customized the UI is enabled and I can add user/password and the registry contains a value for tLockboxId, which references a secure place where the credentials are stored. I was not able to set this up by myself in the customized system.

Any help is highly appreciated.

Thanks, Anna

[Thom Parker]

So explain how you want this to work.  Does the user press a button on a PDF form to get the timestamp?  Can you configure and install something all the system of all the users that need this?

[AnnaHBHB]

Hi @Thom_Parker,

we use the "Certificates" tool to sign PDFs digitally. For this purpose we configure a time stamp server under Edit -> Preferences -> Signatures -> Configure Time Stamp Server Settings -> New

This will bring up this dialog here with the disabled log on options:

I was able to "tick" the "This server requires me to log on" option by modifying the registry entry Computer\HKEY_USERS\S-1-5-21-1068617757-682864690-1294233929-4888\Software\Adobe\Acrobat Reader\DC\Security\cPPKHandler\cTimeStampServers\c0\bAuthRequired - but I did not manage to make the Acrobat Reader use the provided username and password I have for my time stamping service.

Any ideas?

Anna

[Bernd Alheit]

The checkbox is always active:

[AnnaHBHB]

Anyone else with an idea why a system would behave like mine does?

Or an idea how to make Acrobat Reader use the credentials I have for my time stamp service?

Anna

[AnnaHBHB · Accepted solution]

So in case anyone else is experiences this, it turned out that if the following registry key is set to "0" then the dialog is disabled:

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown\cSecurity\cPPKLite\bAllowPasswordSaving