No, App-V is not EOL in April 2026

No, App-V is not EOL in April 2026

a few weeks ago, a customer wrote to me saying that App-V is to go out of support in 2026 after all. 2026? Where did the new date come from? There was the problem that many thought App-V was going out of support in 2025 because the Microsoft Desktop Optimization Pack (MDOP) had been announced for that date. The MDOP includes, among other things, the App-V infrastructure for distributing App-V packages to endpoints. But the App-V client itself was integrated into the operating system starting with Windows 10 1607 (at that time also in Windows Server 2016). App-V packages can also be distributed by other means (PowerShell) or another deployment method like Endpoint Configuration Manager. So nothing to worry about.

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Error Codes of App-V 5 Packages

The typical App-V error code consists of 2 x 4 bytes in the form hexadecimal: "0x000000-0x000000". The first six characters refer to the App-V source code and can be ignored. For error analysis the last 10 characters are interesting. So "00-0x000000". The first two characters show the type of error and the source. The last eight characters are the actual error code. Once an error code is returned as a decimal number, then this decimal number must be converted to a hexadecimal value for analysis.

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Hidden App-V Registry Keys

Now since 2004 I have been implementing projects with Microsoft App-V (then Softgrid) and yet the product surprises me again and again with unknown elements. After the M.A.D. Day 2019 we had a TroubleShooting Session with Sebastian Gernert. We noticed that App-V always accesses the registration key "HKLM\SOFTWARE\Microsoft\AppV\Subsystem\Disabled\". It was on my todo list for a long time to analyze this key once. Now I finally got around to it. At first we created a key "Disabled" and already a number of subkeys like "Integration", "Virtual Fonts", "Virtual Services" etc. appeared in ProcMon.
So the App-V client has some hidden registry keys to disable the different subsystems globally and this can be very useful.
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App-V Edge Problems: The IE Mode And The Fonts Subsystem

Months have passed since our first blog on the topic (Recipe: Virtualize Edge with App-V). During this time the Edge has proven to be a very stable App-V application. If I read from time to time that a new critical vulnerability is emerging, the virtual Edge can react quickly. At this point I would like to point out that we regularly create the Edge and other browsers for our customers. This is done with known AppV bugfixes and with customer specific settings. If you are interested please contact me. For example on Twitter @Nickinformation

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SQL Server Management Studio 18.5 (SSMS) App-V Recipe

The old recipe for SSMS 17.x was a nice success for me with about 1000 hits. Especially the comments were enlightening. The licensing problem could be solved with a simple registration key. With 18.5 there is nothing more to do here.

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