How to share SharePoint Online website with another tenant by Azure B2B

The case

Two companies (for example, parent and affiliate) have their own Microsoft tenants. Both companies are big, let's say more than 10000 users each. Everyday companies hire and fire employees.

The first company (parent) has an Internal website on SharePoint Online. Employees of the second company (child) have to get access to this website. Someone else shouldn't have rights.

Standard approach of Azure B2B "invite each user" is not a suitable option. You (or someone else) can't (it's possible, but I assume you do not want this) manually send an individual invitation for each new user of child company.

Is there another way? Yes, but it's not perfect.

Office 365 error "Sorry, we are having some temporary server issues"

 Some time ago I helped with resolving an issue with authorization in Office 365 on Windows 8.

Symptoms

• Error "Sorry, we are having some temporary server issues" while trying to authorize in any Office 365 apps (Word, Excel, etc.).
• Error #455 in the Application Event Viewer "taskhostex(10032) WebCacheLocal: Error - 1032 (0xfffffbf8) while opening log file "C:\...\AppData\Local\Microsoft\Windows\WebCache\V01.log".
• Internet Explorer does not load any website.
• Services window is blank.

Waiting for "Zoom and stick" feature in Microsoft Outlook 2016 (MSI)

Many times users asked me about a feature of saving Zoom in the email preview in Outlook. Instead of paid plugins and macros, I wanted a built-in option.

As it turned out that this wanted a hundred of people from the Globe.

30.11.2018 appeared information that the feature "Zoom and stick" was finally added to Outlook 2016.

But for 2,5 years (2018 - 2021) the feature doesn't yet appeared in my Microsoft Office Pro Plus 2016.

And now I want to figure it out.