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Thinkstation P310 SFF operating system missing after KB5083769 update
I was wondering if anybody had the same problem after installing. The computer has a Western Digital NVme drive. After restarting the computer the system would post with the message: Error 1962: No operating system found. Boot sequence will automatically repeat. I accessed the bios and disabled the secure boot and reset the certificate, saved the settings, restarted, windows update finished and was able to get to the desktop. Are there any other instances happening out there? Or, is this a common thing happening?How to turn off or disable copilot in windows 11 permanently?
Recently updated Windows 11 and noticed something called Copilot showing up on the taskbar and sometimes popping up when using the PC. It feels distracting and not very useful right now, especially for simple daily tasks. The goal is just to use the computer normally without extra features getting in the way. Tried right-clicking the taskbar and checking settings, but not sure which option actually disables Copilot completely. Some guides online mention Group Policy or Registry edits, but those steps look complicated and risky for someone new to Windows 11. Is there a simple and safe way to turn off or disable copilot in Windows 11? Prefer something easy to follow without breaking anything.What is the best file repair software for rescuing corrupted or damaged files?
Several important files on a computer have become corrupted or damaged and can no longer be opened properly. Some of them are work documents and personal photos, so losing them would be a big problem. Looking for a reliable file repair software that can rescue damaged files and recover as much data as possible. The biggest challenge is not knowing which file repair software actually works well for different file types, such as Word documents, videos, photos, or ZIP archives. Another concern is that some repair programs may not be safe or may fail to recover the file correctly. What is the best way to handle this kind of issue, and which file repair program would you recommend for repairing corrupted files without causing more damage?
Error when Upgrading Windows from 23H2 to 25H2
Hi, I am really hoping that somebody can help me with the issue that I am experiencing right now which is as following: I work in school Environment, and I am trying to upgrade all the devices that we have in school at the moment to Windows version 25H2, but when I am doing that on devices that are connected to our school domain and still has Windows version 23H2 every time at the end of the process of upgrading the device it is undoing changes and getting back to Windows version 23H2. Can somebody help me with this problem? I have already use options such as: Windows Update from the settings, Windows Assistant from the official Microsoft Website, ISO image mounted on the computer and Media creation tool, but nothing has been successful so far. Every time it is undoing changes and getting back to Windows version 23H2. It would be great to have this issue resolved. Krzysztof SzyszkoHow to unblur an image easily from Windows 11 PC?
Hi everyone, I have a few blurry photos that I want to make clearer on my Windows 11 PC. I already tried zooming in and sharpening a bit with the built-in Photos app, but it didn't really help much. Does anyone know an easy way on how to unblur image or enhance image clarity on Windows 11? I need something that doesn't require professional editing skills, maybe a free or simple tool that can automatically fix the blur or improve details. Any suggestions or recommended apps would be really helpful. Thanks!
Windows freezes when I first open or click on anything after startup
I have a laptop with Windows 11 on it. Haven't had any issues for a while, but in the last couple of months it will freeze sometimes. I boot up the laptop and log in to Windows. When I go to open an app or click anything really, the screen will sometimes freeze or go black. I have the spinning circle cursor sometimes but I am unable to do anything. I let it sit for a while and nothing changed. I reboot and sometimes have to go through a few reboots before it no longer freezes. I double-checked and Windows is up to date. I didn't install anything new shortly before the issue started happening. I tried doing a repair and got a message that it ran into a problem and couldn't be repaired. Anyone else have this issue and/or suggestions on what I should check?CONNEXION BUG
Hello, impossible to connect to my Microsoft account : Correlation Id: 1bb93db4-5a42-4664-b6f5-a626c04753fd Timestamp: 2026-04-21T11:48:24.000Z DPTI: dbd5d647006e7f7b5b3b02e9fae0bca2a7c64e00e830e1a3f34dbc8130982e52 Message: An unexpected error occurred. Tag: 7q6ca Code: 2147780643 It occured yesterday and it is sot solved yet. Best regards, Sylvain RENARD
Can't Sign in to anything with my Microsoft account
After the last update or so, I can't sign in to the Microsoft store or the Xbox app or the settings. There is no error code or anything, it just flashes the sign in page and disappear. In the store I get the error "We encountered an error. Please try signing in again later." and that's all. I tried all sorts of thing like resetting and repairing the Microsoft store and Xbox app, but those did nothing. i tried these commands "sfc /scannowsfc /scannow" and "Dism /Online /Cleanup-Image /RestoreHealth" but still nothing. Does anyone have the same error or knows a fix, please let me know. ThanksAll Windows Troubleshooters will not open
Hi........ HP Laptop 15-dy2048ca (2L7J7UA) Windows 11 Home 25H2 OS Build 26200.8117 Intel® Core™ i5 processor Installed RAM 8.00 Gb First time here in a long time. Anyways, my problem is that none of the Window Troubleshooters will open or run. When I click the "Run" button I get two quick brief flashes from the touchpad cursor, but nothing happens. The original reason I had to use the troubleshooters is that I had trouble getting update KB5086672 -26200.8117 to install. But I was able to get the update to install after I ran an In-place Upgrade. I've tried a lot of suggested solutions, but nothing. as of yet. has brought the troubleshooters back to life. So far., in almost two days I have tried the following suggested solutions: Check Path for Temp Folder Restart Cryptographic Service Run SFC and DISM Scan Run Disk Cleanup Check Group Policy Try to run Troubleshooters in Clean Boot State Enable or Restart Required Services Flush the DNS Cache and Reset the Winsock Catalog Disable Third-Party Security Software and Firewalls Rename the Catroot2 and SoftwareDistribution Folders Modify TEMP and TMP Environment Variables Enable Troubleshooters in Group Policy Editor Performed an In-place Upgrade. Used a System Restore Point. Surely there must be a solution to this that works. Isn't there a download or a program where I can wipe out / delete the whole troublesome troubleshooters section and replace it with a troubleshoot section that works?
Windows 11 25H2 SMB Client Directory Cache Regression
- QUERY_DIRECTORY Increased 95x, "dir" ETW Events Dropped to Zero - Hi SMB Team, I've identified a significant performance regression in the SMB client on Windows 11 25H2 affecting network file share operations. I have comprehensive data from a controlled comparison between clean installations of 23H2 and 25H2. Environment - Two clean-installed PCs (23H2 vs 25H2) connected to the same file server on the same network - Application: Python-based tool loading .py files from SMB file shares - Both PCs have identical SMB client configuration defaults for all cache-related parameters Measured Impact | Metric | 23H2 | 25H2 | Ratio | |--------|------|------|-------| | Application startup time | 26 sec | 80 sec | 3.1x slower | | Total SMB2 packets | 12,544 | 227,796 | 18.2x | | QUERY_DIRECTORY packets | 1,128 | 107,382 | 95.2x | | READ packets | 586 | 570 | ~1.0x (identical workload) | | PerfMon Metadata Requests/sec (avg) | 87.10 | 1,185.52 | 13.6x | The READ count is virtually identical (586 vs 570), confirming the actual workload is the same. The 25H2 client is issuing 95x more directory enumeration requests to the server for the same set of files. Root Cause: ETW "dir" Cache Events Dropped to Zero I captured ETW traces from the Microsoft-Windows-SMBClient provider on both systems and extracted cache-related events. This is the definitive finding: | ETW Event Type | 23H2 | 25H2 | |----------------|------|------| | file | 151,667 | 185,365 | | dir | 93,917 | 0 | | performance | 0 | 106,557 | On 23H2, the SMB client generated 93,917 "dir" events, indicating active directory cache usage. On 25H2, this event type is completely absent — zero occurrences. A new "performance" event type (106,557 occurrences) appears in 25H2 but does not serve as a cache mechanism. This indicates that the directory cache code path in the SMB client driver has been removed or disabled in 25H2. SMB2 Command Breakdown (Wire shark) | SMB2 Command | ID | 23H2 | 25H2 | Ratio | |--------------|----|------|------|-------| | CREATE | 5 | 3,278 | 56,536 | 17.2x | | CLOSE | 6 | 2,274 | 54,462 | 24.0x | | READ | 8 | 586 | 570 | 0.97x | | QUERY_DIRECTORY | 14 | 1,128 | 107,382 | 95.2x | | QUERY_INFO | 16 | 4,284 | 8,846 | 2.1x | | IOCTL | 11 | 10 | 0 | — | | CHANGE_NOTIFY | 15 | 0 | 0 | — | | Total | | 12,544 | 227,796 | 18.2x | 99.7% of all 25H2 SMB2 traffic is file discovery overhead. Only 0.25% is actual data reads. Additional Verification: Minimized Search Path (25H2) I also tested a minimized configuration on 25H2 using explicit path specification to reduce directory traversal: | Pattern | Startup | Total Packets | QUERY_DIRECTORY | |---------|---------|---------------|------------------| | 23H2 default | 26 sec | 12,544 | 1,128 | | 25H2 minimized paths | 30 sec | 119,153 | 57,888 | | 25H2 default | 80 sec | 227,796 | 107,382 | Even with minimized search paths, 25H2 generates 9.5x more packets than 23H2 and the ETW "dir" events remain at zero. This confirms the issue is in the OS driver, not the application. SMB Client Configuration (Identical Defaults) All cache-related parameters are identical between 23H2 and 25H2 at clean install: - DirectoryCacheLifetime: 10 (both) - DirectoryCacheEntriesMax: 16 (both) - FileInfoCacheLifetime: 10 (both) - FileInfoCacheEntriesMax: 64 (both) - FileNotFoundCacheLifetime: 5 (both) - FileNotFoundCacheEntriesMax: 128 (both) I also tested increasing all cache parameters significantly (DirectoryCacheLifetime=60, FileInfoCacheEntriesMax=65536, etc.) with no improvement. Additionally, setting RequireSecuritySignature=False (changed to True by default in 25H2) had no effect. Affected Driver Versions | Driver | 23H2 | 25H2 | Size Change | |--------|------|------|-------------| | mrxsmb.sys | 10.0.22621.6133 (685 KB) | 10.0.26100.8246 (931 KB) | +35.9% | | mrxsmb20.sys | 10.0.22621.6133 (333 KB) | 10.0.26100.8115 (390 KB) | +17.2% | | rdbss.sys | 10.0.22621.6133 (505 KB) | 10.0.26100.8115 (562 KB) | +11.4% | The 35.9% size increase in mrxsmb.sys suggests substantial implementation changes beyond routine patches. Questions 1. Is the removal of directory cache events ("dir") in 25H2 an intentional design change or a regression? 2. If intentional, what is the recommended mitigation for applications that perform heavy directory enumeration over SMB? 3. Is there a hotfix or upcoming update that addresses this behavior? Thank you for your time.
