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104100's avatar
104100
Occasional Reader
Apr 20, 2026

New outlook reinstallation failed

New outlook was installed on my pc . Due to technical problems I had to reinstall new outlook.

This process could not be done.  By trying to install we got everythime the following error message : invalidcredentials temprorarily unavailable.

Password and login are correct .

Each time there is always an indication that there must be a synchronisation with the cloud ...?

 

Can somebody help ?

 

 

2 Replies

  • mohdadeeb's avatar
    mohdadeeb
    Iron Contributor
    Apr 20, 2026

    Yes, this issue can happen during New Outlook reinstallation due to corrupted installation files, incomplete previous uninstall, or system compatibility issues. You can try restarting the system, clearing any leftover Office/Outlook files, and then reinstalling again. If still not working, repairing Microsoft Office or using the Microsoft Support and Recovery Assistant tool can help resolve it.

  • RobertSparnaaij's avatar
    RobertSparnaaij
    MVP
    Apr 20, 2026

    Reinstalling won't help with configuration issues.

    If you want to reset the configuration of New Outlook, start Outlook with the reset switch.

    Open a Run command and type; 

    olk.exe --reset

    Note that there is a space in the command and that there are 2 dashes in front of the reset switch.

    For additional info see; Resetting New Outlook; 3 methods to guarantee success! - Robert 365

    That said;
    Which account type are you trying to configure in New Outlook? Note that New Outlook doesn't support on-premises Exchange accounts.