10,968 questions
so it seems like that adding the Microsoft account in settings.... accounts... access work or school. Then clicking connect and entering the email address that you use with Teams seems to resolve the issue.
Error caa5009d
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 4%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ER%3C/text%3E%3C/svg%3E)
Richard
116
Reputation points
We keep getting the error caa5009d happen at random on some of our machines. I have not been able to tie it down to one specific cause. 1 instance is the user changed their email password, and then the next time teams loaded the error happened. For information we have a separate active directory infrastructure, from where our Office 365/Teams is running. There are no links from the domain that the machines use to Azure AD on the Office 365 tennet. I have logs from machines that’s its happened on. It can be fixed by deleting the user profile in some instances, others deleting the teams folder from the user profile, and the re-loading it has worked. Other times that has failed and a new profile is required. If anyone can help with this error that would be great! Thanks! Richard
Microsoft Teams | Microsoft Teams for business | Other
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(48, 80%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ET%3C/text%3E%3C/svg%3E)
Trevor 1 Reputation point2021-04-08T14:25:27.253+00:00 This has become a real pain. My only path to run Teams Windows Client is to uninstall, delete the app data folder, reinstall, try to log in twice then on subsequent tries the error page appears, then disappears and gives me a different login screen where I get in ok. Later that day or the next day I can no longer log in and have to start the cycle all over again.
And I have to try to convince our company to switch to the Teams platform!
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Accepted answer
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Richard 116 Reputation points
2021-03-17T09:04:57.247+00:00 -
Sharon Zhao-MSFT 25,761 Reputation points Microsoft External Staff2021-03-17T10:00:21.097+00:00 Thanks for your kindly sharing. It is really a good news.
I converted your comment to answer. You could accept it as answer to help more people with the same situation.
Thanks for your understanding.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(268.8, 92%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESD%3C/text%3E%3C/svg%3E)
Seolebaleng Dandy Mosiameemang 0 Reputation points2024-03-05T09:09:04.83+00:00 Just update the Microsoft App Installer. Sorted my problem
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 80%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETC%3C/text%3E%3C/svg%3E)
Tinsley, Clay 0 Reputation points2024-04-02T19:45:47.0733333+00:00 But how and where do you find the App Installer? The one in the Store is not downloadable.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(115.19999999999999, 85%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERT%3C/text%3E%3C/svg%3E)
Ross Tracy 0 Reputation points2024-06-25T18:42:36.9833333+00:00 Just in case anyone comes here looking, here is how I solved it.
Download both the Desktop App Installer and Teams Installer and save them to a location:
Update Desktop App Installer
Download the installer for the latest version of App Installer
Download Teams Installer
https://www.microsoft.com/en-us/microsoft-teams/download-app
Once you do that run the following powershell script as an admin to update the Desktop App Installer and install Teams
#update the app installer: Add-AppProvisionedPackage -Online -PackagePath "\\PathTo\Installer\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle" -SkipLicense #Install the Teams for Work Add-AppProvisionedPackage -Online -PackagePath "\\PathTo\Installer\MSTeams-x64.msix" -SkipLicense -
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(86.4, 28.999999999999996%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELF%3C/text%3E%3C/svg%3E)
Lisa F 0 Reputation points2024-08-06T16:44:03.0733333+00:00 I turned off the Windows firewall and stopped getting this message