When a client of a server that is joined to a Windows Domain loses the trust relationship to its object in Active Directory, you normally get this error message, when you try to login:
The trust relationship between this workstation and the primary domain failed
What you then normally do is to un-join the computer from the domain and join it again.
The problem with with a Windows CA (Certificate Authority) Server is that you cannot un-join it from the domain. So that would mean you have to completely Read more [...]
If you do not want to or cannot use the SharePoint Upgrade Wizard, you can also use the command line to upgrade SharePoint. This is the exact syntax:
PSConfig.exe -cmd upgrade -inplace b2b -wait -cmd applicationcontent -install -cmd installfeatures -cmd secureresources -cmd services -install
Recently, I had the problem that a Robocopy script created folder with a space character at the end on the Windows NTFS file system. So for example
In File Explorer, I could not delete the folder, the error message said "Object does not exist". Also renaming the folder was not possible.
The onyl solution was to go to a CMD box and issue the command
rd /s "\\?\D:\bad\folder\path "
Just answer "y* when you are asked if you really want to delete the folder.
To avoid the typical picture on the background of your desktop, use the following procedure to force a solid blue color as background:
Start the Group Policy Editor: gpedit.msc
Go to User Configuration > Administrative Templates > Desktop > Desktop
Open Desktop Wallpaper
Enable it and set the Wallpaper Name to:
Click on OK to save the changes
While you could also just right-click on the desktop and choose Personalize and set a Read more [...]
Sometimes, if you can't use the graphical Event Viewer (e.g. on Windows Server Core), it is handy to list the latest Event Viewer entries via Powershell:
Get-EventLog System -Newest 10 | fl
Get-EventLog Application -Newest 10 | fl
This is also much quicker than starting Event Viewer.
After the September 2021 Windows Update, non-administrator users will no longer be able to add remote printers without an elevation of privilege to administrator.
To allow normal users to add remote printers (hosted on a print server), you can now add the following Registry value on the client:
RestrictDriverInstallationToAdministrators = 0 (DWORD 32)
No restart of the client is needed.
If things still do Read more [...]
When logged in as Administrator in a Windows 10 or 11 machine, when you try to add a shared printer, you get the error:
That didn't work. We can't install this printer right now. Try again later or contact your network administrator for help. Error: #740.
The underlying problem is this: Error 740 means: "The requested operation requires elevation".
This is a problem as you are already logged in as Administrator. So the solution is to start the "Add Printer Wizard" as Administrator. To do this:
Read more [...]
With Exchange 2019, Microsoft has introduced a new search engine: BigFunnel. This is the same engine that is used in Bing and in Exchange Online.
Unfortunately, sometimes, the search results are incomplete. While this might have different reasons, I am just looking at one prticular case here:
Incomplete search results are happening on OWA, i.e. this is an issue on the server, not on Outlook (the client)
The number of missing emails from the search results is visible in "BigFunnelNotIndexedCount"
Read more [...]
The LetsEncrypt Root Certificate (DST Root CA X3) will expire on 30-Sep-2021. While there is a new Root Certificate available for a while, some devices and browsers might show an error after that date as they might not have got the new Root Certificate.
Here is the simplified overview:
Old LetsEncrypt chain:
DST Root CA X3 : Expires 30-Sep-2021
R3 (Intermediate): Expires 29-Sep-2021
New LetsEncrypt chain:
ISRG Root X1 : Expires 04-Jun 2035
R3 (Intermediate): Expires 15-Sep 2025
If Read more [...]
Exchange constantly writes DB Logs to disk. These logs only get cleared when a backup is done.
If you need to clear those logs without a backup, use the following commands (if the DB log files are on the d: drive):
Open a cmd box with admin rights
add volume d:
That's it. You should now have much more free disk space.