External Sharing in SharePoint and OneDrive is changing: What You Need to Know

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In an ongoing effort to create a more secure environment by default, Microsoft is introducing an important security update that will affect how external users access content shared through SharePoint and OneDrive. Starting July 1, 2025, any links shared with external users before your organization enabled Microsoft Entra B2B integration will no longer work. This change applies to all organizations that have already enabled or will enable SharePoint and OneDrive integration with Microsoft Entra B2B (Most organizations I have looked into so far). External users trying to use old links will see an error message saying the organization has updated its guest access settings. To regain access, the content must be reshared. Highlights of how the change affects organizations who have enabled B2B: All external sharing will require guest registration. External users must be added as guests in your Microsoft Entra directory. Access will be managed through Microsoft Entra B2B Invitation Manager. T...

Note to self: Merging files before CUCM upgrade

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I ran into an issue when upgrading (patching) a CUCM 7.1.2 tonight, and I couldn't see any readme files on cisco.com explaining the problem. However, I came across a blog post mentioning something similar.

When you download patches from cisco.com, they might be big and split into two or more files.
One way to merge them is using the "copy /B" in a dos prompt.

Example: When you have downloaded the two files "UCSInstall_UCOS_X.X.X.XXXXX-XX.sgn.iso_part1of2" and "UCSInstall_UCOS_X.X.X.XXXXX-XX.sgn.iso_part2of2", simply merge them by typing: "Copy /B UCSInstall_UCOS_X.X.X.XXXXX-XX.sgn.iso_part1of2+UCSInstall_UCOS_X.X.X.XXXXX-XX.sgn.iso_part2of2 UCSInstall_UCOS_X.X.X.XXXXX-XX.sgn.iso

The process will take a few minutes, and should complete with "one files copied" (You need to be in the folder where these files are located).

Once this is done, you put the merged file in a folder which you can connect to from the CUCM.
(Tip: I use xlite as a ftp server for this purpose :)