Help, I'm unable to sign any document.

Hi,

since today I'm unable to sign any Document witch my Adobe Rader Standard 2017 (17.011.30194).

When i click on the "fill &sign"- Tool there's a hint: (Your data will be retrieved).

If I click on "sign" the small window with the loading animation pops up (see the attached picture)

but nothing changes. I had also deactivated the firewall once. Does anyone else have an idea?

I use the latest win10 with all updates...

with kind regards D. Schomerus