Twincat on and running (TMC and TPY file checked), but still ADS adds server button is missing, and Visual components need some installation.
New 4.9 Premium OLP installation, Windows 11, Twincat 3.1.4026.10 with user UM_RT.
Did it work with older VC and same TwinCAT installation? If you have installed a newer version of TwinCAT it might not be compatible.
Yes it works on previous installation (laptop). Normally ADS interface stay as same, but now looks like it is change and interface is not updated. Change back to older Twincat version is not a best solution for me.
Same issue for me, the Build 4026 of Twincat seems to be the only one supported on Windows 11…
Check the TwinCAT folder in Program Files. You need to find the TwinCAT.Ads.dll and copy it to the C:\Windows\Microsoft.NET\assembly\GAC_MSIL\TwinCAT.Ads.. folder and restart VC.
Edit:
Download this:
v4.0_4.4.0.0__180016cd49e5e8c3.zip (220.0 KB)
Extract it to:
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\TwinCAT.Ads
(Create the TwinCAT.Ads folder if it’s not there)
The final path for the TwinCAT.Ads.dll should be:
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\TwinCAT.Ads\v4.0_4.4.0.0__180016cd49e5e8c3\TwinCAT.Ads.dll
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Heum Ok but under the Beckhoff folder installation there are more than 20 files with differents date & size (See image in attachment) 
I’ll test them one by one, I’ll keep you in the loop
Hi,
Finaly it works.
I created a folder: “.NET” under C:\Program Files (x86)\Beckhoff\TwinCAT\AdsApi\TcAdsDll\
I copied this folder : v4.0_4.3.32.0__180016cd49e5e8c3 located under C:\Windows\Microsoft.NET\assembly\GAC_MSIL\TwinCAT.Ads
under this folder :C:\Program Files (x86)\Beckhoff\TwinCAT\AdsApi\TcAdsDll.NET
Strange but it works 
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If you really want to mess with the ads dlls directly (can’t recommend as it will just likely lead to other problems later), I would suggest to at least use the GAC util to register them properly to the global assembly cache instead of copying files around.
I’m having the same issue on a freshly setup Win11 system, with Visual Components Premium 4.10 and TwinCAT 4026.19.
Are there any plans from Visual Components for a sustainable solution? I would expect this to work out-of-the-box with the latest version/build of TwinCAT 4026 latest when you install the TC1000 (TwinCAT ADS) package with the TwinCAT Package Manager.
The solution from @Este worked for me(Kudos for that). But I don’t think it’s feasible to have to go copy files around or configure Global Assembly Cache.
Just some additional information. The folder @Este mentioned:
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\TwinCAT.Ads
is not created after installing XAE, XAR or TC1000 (v1.0.0) via TwinCAT Package Manager.
The Visual Studio developer utility “Gacutil.exe” is not installed when using the TwinCAT Package Manager to install the above mentioned workloads/packages or TcXaeShell/TcXaeShell64.