Unable to add existing list to Lists in Teams channel

[JWhiteFEI]

I am having an issue adding an existing list to Lists in Teams. I can add all other lists from this group/site to the desired Teams channel, except this one. I am getting an error: "That link did not work because you either do not have access or it is unsupported."

The channel is private and the list is not hosted on the sub-site for the private channel; rather its hosted on the main site. However, I was able to add other Lists from other sites to this private channel with no issue.

I have verified that the permissions are standard; same as all the other lists. I am an owner with Full Control. I can access and edit the list through SharePoint no problem. Any ideas as to why this may be happening?

[#2]

@JWhiteFEI 

We have the exact same issues:

#Microsoft lists
#Microsoft Teams
#Microsoft SharePoint

[#3]

@JWhiteFEI 

We have the same issues, but it is every sharepoint site. Hopefully MS fixes soon so you can use existing from non-group based SP sites and not just ones created from the app or group based.

[#4]

Same problem here with some lists. I have no idea what causes the list to be unsupported.

[#5]

I have the same problem. Only 3 of the 5 lists in my Team site are visible in the "Add an existing list" dialog. If I try to add either of the other two using a SharePoint link, I get this error. I was able to add a list from my organization's SharePoint site, but not a list that exists within my own Team site.

[#6]

I noticed that the two lists I couldn't add to Teams were the two lists that I created by directly exporting from Access to SharePoint. As a test, I tried exporting one of them from Access to Excel, then adding a new list to SharePoint based on the Excel file. That list could indeed be added to a Teams tab in SharePoint. That's a positive step and a clue, but I would much, much rather be able to add the existing list to Teams instead of having to re-create my formatting and views from scratch with a new list from Excel.

There's no "created by" flag on the list itself that I can see, only on records in the list. I can't find anything in the list settings that would make it work. 

[#7]

@JWhiteFEI 

Same here... interestingly, I had added it to a previous Team, same process, worked fine, is still fine, but i cannot add it to this one ...and I created the Team.

...very frustrating...and no answer here yet :( 

[#8]

Figured it out ...DOH! I copied a web page URL and not the actual URL of the list. The correct URL worked perfectly :)

[#9]

How do you get the correct URL?  is it the address bar?  #confused @CM-Ontario 

[#10]

@NeelamD1075 

If your URL in the address bar is like

https://<yourdomain>.sharepoint.com/sites/<yoursite>/Lists/<yourlistname>

with either

/<viewname>.aspx

or

?viewid=<lotsofrandomcharacters>

at the end, it should work whether you include that ending view information or not.

I suspect that @CM-Ontario's problem was that they were on a page with the list in a web part. If you are viewing a page with the list in a web part and you see a link named "See all" at the upper right corner, that will be the link to your list.