Error code: 2755 Unable to install any software on Windows 11

This issue has bothered me for a while now. I am unable to install any new software on my Windows 11 system. Anytime I run an installer exe or msi file, I constantly see this error.

I have tried changing the temp folder as well. From what I can see, I am unable to access windir/Installer folder. It says corrupt or unreadable.

My last resort is to perform a clean installation of Windows 11. But I would appreciate any inputs or assistance in this matter.

Usually the best way to solve obscure errors like this is with a reinstall.

The second best way is to make another administrator account and see if that account allows you to proceed.

The best way to prevent something like this is to make your main account a limited/regular/non-admin account and have a seperate administrator account that you don’t use for daily computing, only for authorizing system changes.

Why not first try reset windows and settings option without losing data and if that doesn’t help then go for fresh install..

@rsaeon Never thought about this will try setting a separate admin account if I go for fresh installation.

@bigb123 will give this a shot but I vaguely remember trying this and the system asked me for a bootable windows media to perform reset.

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Windows screwed everything up so if you want to not feel annoyed like i did switch asap

It takes years to reset windows and 10 minutes to reinstall

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@Upsided Really man, Windows 11 sucks. It came installed with the laptop, otherwise I am still happy with Win10 on my older system.

Requiring two clicks to access properties and other options is a sin Microsoft has committed. The guy who designed that right click UX should be fired.

Its unusable for me.

You can actually set the right-click to classic right-click by using CMD.

I always wipe the pre installed windows on any new system/laptop. Manufacturers tweak them according to their way. There is usually pre installed stuff that nobody needs.

I am using win11 on 10 year old system there are no errors.


The right click context menu speed went down with every windows release. It was so fast in old windows. Now it takes a second open the menu.

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This and taskbar in win11 is running on some web based code, I think this is because in the future microsoft wants some form of cloud based OS, so same code runs in local machine and the web version. So they don’t have to maintain separate code bases.

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By any chance is your windows edition the official one or custom one…like tiny windows 11 ultimate pro max or something??

What you are talking about (web based code) is actually this:

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@bigb123 It’s default windows which came with Armory crate (Asus laptop). Only software I remember preinstalled which I already swapped with GHelper.

@Heisen ya I miss how snappy Win7 was

This is signaling broken windows installer or your account doesn’t have admin permissions

Try these solutions:
Open CMD and run these steps
chkdsk C: /f /r
DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

if issue still persists, try
check windows installer is running or not
unregister and reregister windows installer through cmd
msiexec /unregister
msiexec /regserver

if these steps doesnt resolve the problem then reinstalling windows will be the only option.

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I have tried this options except for the DISM command. Will give it a try.

Also check for admin privileges for your account through control panel

Try System Restore in Windows 11.