https://forge.codesys.com/forge/talk/Runtime/thread/b2a0475cd8/2026-08-13T05:50:02.997000ZRecent posts to Reset device password Festo PLC2026-08-13T05:50:02.997000Z2026-08-13T05:50:02.997000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.comf7a6b6b0d3aa4cf8a29356031498036f002f58ff

<div class="markdown_content"><p>these credentials are saved in the plc - you need to ask Festo how to do this.</p></div>

2026-08-12T22:31:34.631000Z2026-08-12T22:31:34.631000Zleaghttps://forge.codesys.com/u/leag/https://forge.codesys.comb96e9496425e406dae8e6cabb9f6267abf3e4024

<div class="markdown_content"><p>Hi,<br/> I am new to CODESYS, and I want to program a new FESTO, but I am getting this authentication screen. I don't remember the password. I tried with Administrator/Administrator and some other defaults I found online but nothing works.<br/> I also tried searching for CODESYSControl_User.cfg and many other recommended directories but I dont seem to have any of them (like CODESYSControlWinV3x64)</p> <p>Could you please help me understand what I need to reset?</p> <p>Thanks a lot</p></div>