RDS server connection problem for one workstation / CAL license per user. Error 0xf06

Question

Hello,

I'm stuck in a strange situation.

In my domain I have 1 Remote Desktop server which is itself a license server with CAL licenses per user.

[

](https://filestore.community.support.microsoft.com/api/images/1975d1b8-c8bb-49ef-9c63-4c56a4e9f038?upload=true&fud_access=wJJIheezUklbAN2ppeDns8cDNpYs3nCYjgitr%2bfFBh2dqlqMuW7np3F6Utp%2fKMltnRRYFtVjOMO5tpbpW9UyRAwvLeec5emAPixgq9ta07Dgnp2aq5eJbnfd%2fU3qhn5498QChOTHl3NpYS7xR7zASsaF20jo4ICSz2XTm%2b3GDR4XitSm7nHRR843ku7uXQ4oF6innoBxMaSe9UfrAdMi7owFKjdP9m1UP2W5KAtfQLNNZI%2fG3dQJU%2fIFGDN1sPjXsx1lCMhRN6DHFTfERq7Baz6785WYxdZBS2adppBWki766hA2E0I55EPNnix3h6%2bUq9QGCascR3nVK2n2lQLp4gyYClr5n2mfPtXjzY8eu7Bw6sVtLOXteZC2mJvBxgGM1DOBBoKYHm2F6L9gOJVmP1iPEWskYmM5O6yYfCyTpwY%3d)

[

](https://filestore.community.support.microsoft.com/api/images/c3f74191-080f-4836-9ada-c6fecaa737e1?upload=true&fud_access=wJJIheezUklbAN2ppeDns8cDNpYs3nCYjgitr%2bfFBh2dqlqMuW7np3F6Utp%2fKMltnRRYFtVjOMO5tpbpW9UyRAwvLeec5emAPixgq9ta07Dgnp2aq5eJbnfd%2fU3qhn5498QChOTHl3NpYS7xR7zASsaF20jo4ICSz2XTm%2b3GDR4XitSm7nHRR843ku7uXQ4oF6innoBxMaSe9UfrAdMi7owFKjdP9m1UP2W5KAtfQLN90zG%2fq%2fv0z1Cn0Q2XSk4Pf6AiLEcTMFW3zHCFWRxS%2b%2bUDgEpNpipcRILkNZREXk4eVxg4atlOgwnyIKEoOdk0VrXGSZyc9RQNiscYOS%2b2O1Z8CEqw8irwgejXH0bGAtkHqNkNPk0d90wOzV%2fWitnCpx3o%2bwpfU3sn9lERuZ%2fshy%2bDgsnhSTbkNe63eDc37wI%3d)

Everything is working correctly, users can connect to this server via rdp without any problems.

Except that on one workstation, it's impossible to rdp to this server (no matter which account is used, I even tried with the domain administrator account), and it stays in this state for a long time:

[

](https://filestore.community.support.microsoft.com/api/images/55fc416c-fae1-48cc-a880-29dfcbc6b30e?upload=true&fud_access=wJJIheezUklbAN2ppeDns8cDNpYs3nCYjgitr%2bfFBh2dqlqMuW7np3F6Utp%2fKMltnRRYFtVjOMO5tpbpW9UyRAwvLeec5emAPixgq9ta07Dgnp2aq5eJbnfd%2fU3qhn5498QChOTHl3NpYS7xR7zASsaF20jo4ICSz2XTm%2b3GDR4XitSm7nHRR843ku7uXQ4oF6innoBxMaSe9UfrAdMi7owFKjdP9m1UP2W5KAtfQLPWbgjGVUR6X64S0dHHFLNQMKCUOj4WzSFgG2XqR5O3kJGriJhPIy9dqNBlqsyWRVAPdyAdYlOJx6SaFTtWdPihxAQrmydRX1q5m3N4NdAldGgl%2bTKc9I%2bXTmaGRJ0%2brsejoXmMrI1txoOg2rxeFMeFfQjKa5eMWVJe5AyX%2bdzy75PaodV50p7BEibrrKlVAlk%3d)

Then, after a few minutes, it shows :

[

](https://filestore.community.support.microsoft.com/api/images/e91ce7c3-ac4d-4773-ac2f-d1267c3934f4?upload=true&fud_access=wJJIheezUklbAN2ppeDns8cDNpYs3nCYjgitr%2bfFBh2dqlqMuW7np3F6Utp%2fKMltnRRYFtVjOMO5tpbpW9UyRAwvLeec5emAPixgq9ta07Dgnp2aq5eJbnfd%2fU3qhn5498QChOTHl3NpYS7xR7zASsaF20jo4ICSz2XTm%2b3GDR4XitSm7nHRR843ku7uXQ4oF6innoBxMaSe9UfrAdMi7owFKjdP9m1UP2W5KAtfQLMlC%2bZaTfYkQLUHjLnfMUMftCj8o9C8zQH53SHFXUcbvxMrTZgJbZ5CLLdESnU3oPczLA0mI6BhVQ3u72t%2f17Oe9NqgQCz%2bWccRkMFXm9VD9uXyulAIYPqwd5AV0loExwXh%2f%2fKF6bldRc52fj8cZ9fLwJ55n1RjKgM3zBntXnMg%2byupdAwxT2mmwbkDFIXUIPc%3d)

From this machine I've tried to rdp to other servers and computers and there's no problem.

[

](https://filestore.community.support.microsoft.com/api/images/99ddeb8f-672f-45b5-9d7d-db3b611822b1?upload=true&fud_access=wJJIheezUklbAN2ppeDns8cDNpYs3nCYjgitr%2bfFBh2dqlqMuW7np3F6Utp%2fKMltnRRYFtVjOMO5tpbpW9UyRAwvLeec5emAPixgq9ta07Dgnp2aq5eJbnfd%2fU3qhn5498QChOTHl3NpYS7xR7zASsaF20jo4ICSz2XTm%2b3GDR4XitSm7nHRR843ku7uXQ4oF6innoBxMaSe9UfrAdMi7owFKjdP9m1UP2W5KAtfQLPKT8DUp%2bvox%2b3luUgZAne%2boKQGUQVF3jG%2f0eRVZJYrxYVGj2P2gDi2BpssqYNY8UeZIOck%2f3cHX7JNyyR8lhqNl9UGeyBSqq3q3BhuGxlTY%2fNLW1OcZABZgynn5lBUW3hr8bAVZE6NNBxEjn4F%2bYAP3lhyyEU61aJH1gNuixtz9cEAujzUkaOrYWP39bPccaQ%3d)

License diagnostics don't give me any errors

I've scoured the various forums and I'm running out of ideas!

Answer 1

Hi Paolo,

i'm facing the same situation. BTW if i change the client ip the RDP connection works.
I'm keep investigating and i let you know if i solve the problem once for all.

Best regars,
Francesco