Now read this post fromMiniToolto get several useful solutions to this issue.
Here a user describes his problem as follows.
Now lets see how to fix this annoying issue.
If the initial troubleshooting approaches cannot help you get rid of the error, try the solutions below.
Solution 1.
Delete Teams Cache
Outdated Teams cache files can cause the issue of FileType selected not supported by this app.
To fix it, follow the steps below todelete Teams cache.
PressWindows + Ekey combination to open File Explorer.
In the top address bar, throw in%appdata%\Microsoft\Teamsand pressEnter.
Or it’s possible for you to navigate toC:\Users\username\AppData\Roaming\Microsoft\Teamslayer by layer.
PressCtrl + Akeyboard shortcut to select all cache files and right-click them to selectDelete.
After that, restart Teams and find out if the error has gone.
Solution 2.
Therefore, you oughta unhide all sheets.
kick off the target Excel file, right-click any sheet to selectUnhide.
Excel freezes when copying and pasting?
What to do when Excel freezes?
Now you’ve got the option to read this post to get the answer.
Solution 3.
However, sometimes it results in the Teams or Excel FileType selected not supported issue.
Here you might see how todisable hardware graphics acceleration.
In Excel, clickFile>Options.
Move on to theAdvancedtab, and scroll down to checkDisable hardware graphics accelerationunder theDisplaysection.
ClickOKto make this change take effect.
Solution 4. you’re able to give it a try.
In Teams, go to the channel where you want the file as a tab and opt for existingFilestab.
Then click thethree-dot iconof the target file and selectMake this a tabfrom the context menu.
Such problems often lead to the loss of Excel files.
Torecover deleted or lost Excel files, you’ve got the option to useMiniTool Power Data Recovery.
Free download MiniTool Power Data Recovery and try it out.
Thank you in advance.
