7,925 questions
It's a good idea to start the cu upgrade in command line
Setup.exe /mode:upgrade /targetdir:"C:\Program Files\Microsoft\Exchange Server" /IAcceptExchangeServerLicenseTerms
Upgrading MS exchange 2016 cu15 to cu18/19
![](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(291.2, 94%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
Martin
1
Reputation point
Hello,
I am trying to upgrade my MS exchange 2016 cu15 to cu18/19 via gui.
Gui window is disappearing in few moments
in log i can see this:
[ERROR] The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
[Unable to load assembly from file C:\Windows\Temp\ExchangeSetup\Microsoft.Exchange.Setup.GUI.dll using setup arguments /sourcedir:E:./mode:Upgrade, source directory is E:\, target directory is C:\Windows\Temp\ExchangeSetup and Exchange is installed True.
any idea?
thank you
Exchange | Exchange Server | Management
{count} votes
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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(25.6, 67%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
Joyce Shen - MSFT 16,701 Reputation points2021-01-29T08:11:31.06+00:00 Hi @Martin
Is there any update about your issue?
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Martin 1 Reputation point
2021-01-29T08:20:04.803+00:00 Hello @Joyce Shen - MSFT .
Not yet.
Still waiting for management approval. It is hospital so it is not urgent these days...My account was already part of necessary groups in my first attempt to upgrade exch srv.
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Joyce Shen - MSFT 16,701 Reputation points
2021-02-05T07:58:02.993+00:00
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3 answers
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Manu Philip 20,211 Reputation points MVP Volunteer Moderator2021-01-19T18:02:50.02+00:00 -
Martin 1 Reputation point
2021-01-19T18:09:56.097+00:00 Thank you,
i will test it next week.
Martin
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Joyce Shen - MSFT 16,701 Reputation points
2021-01-20T02:56:56.3+00:00 Hi @Martin
First make sure you have Schema Admins, Enterprise admins, Domain admins and organization management membership.
And the steps to update the Exchange to latest CU version is list here in the official document: Upgrade Exchange to the latest Cumulative Update. Which introduces both ways using GUI or powershell.
You could also refer to this thread which discussed the similar issue as yours: Re-Running Exchange 2016 CU13 Installer
Waiting for your update here about this issue, good luck!
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