Here is how to delete windows old installation folder in windows 10
1 – Search Disk Cleanup in the search box of your windows 10 taskbar. Click on Disk Cleanup from the search result.
2 – On clicking it disk cleanup info box will pop up. In this your drive which is having your windows installed will show up. The light blue colored flag shows the installation drive.
3 – Now, select on windows.old folder from the list having maximum size in GB.
Source:- https://merabheja.com/how-to-delete-windows-old-installation-folder-in-windows-10/


I locked a folder within a folder with cacls command (it was in drive g).
cd "az"
cacls "pics" /e /c /d %username%

it actually worked and is unlockable with
cacls "pics" /e /c /g %username%:f

it worked for about 2weeks but now it does not work. all it says is "you dont currently have permission to access this folder"

please help, I have my documents in that folder including flight documents. please reply ASAP.


(Mod: if this is not the appropriate area for this post, please move. Thanks.)

I am attempting to Find and Replace text in an Excel 2016 spreadsheet.

For example, I'm searching for the following URL in the spreadsheet:


Upon located this URL in the spreadsheet, I want to replace the following with the @ symbol:


The result would be this:


Previously, I was using Excel online and was able to do this easily. I'm now using a desktop version which is giving me the following error message: "This function is invalid"

When I attempt to make the change manually, it seems to initiate a function; I am not familiar with Excel functions and do not need this at this time.

I've read online that the @ symbol is reserved and related to functions (?) and therefore cannot be used as a simple text symbol-- is this true?

Is there any method (or work-around) to achieve this?

Thank you in advance.


I ended up having to reinstall Windows. The laptop was useless in regular mode. Couldn't access "start" or type anything into "search". However, I could do both of these things when in safe mode. After the reinstall, although I can now access start and type into search, it takes a few moments before the laptop will respond when doing this. Thanks rproffitt for the reinstall info.

Votes + Comments
Always nice to read what happens in the end.

Hi.I've already solve the problem last year.lol
I use the a linux program called Ultimate Boot Cd Beta Version and follow this steps
www.techrepublic.com/blog/tr-dojo/reset-windows-passwords-with-the-help-of-linux and this one https://partedmagic.com/clearing-the-administrator-password-in-windows/. Finally i got to open and decrypt the files that are affected using EMSISOFT.
I lost my database. So i install again the program and use my previous back up of database.Now my Server is working again.Of course i'd make sure that it is protected and have back up now.
Thank you for helping me @rproffitt. Really BIG help.


Buy a new one.

It's passed on, this modem is no more, it has ceased to be. It's expired and gone to meet its maker. It's a stiff, bereft of life, it rests in peace. It's kicked the bucket, shuffled off this mortal coil, run down the curtain and joined the choir invisible! This is an ex-modem!

With apologies to Monty Python.

Votes + Comments
Here's your Nine pence.

There's one trick I used on W10 machines that is little known. I had a relative that insisted their PC could only use the 32 bit Windows versions. So fine, did that. Sure enough they were back saying they need the 64 bit version. The Digital Entitlement (horrid name) allowed the same version but in other bits to install and activate. So there is something nice about the new license system.


Officially, Microsoft was still offering the free upgrade only to users of "accessibility" features but they weren't asking for any verification so it's basically just an extension. I have two laptops that I don't want to upgrade just yet so in order to allow me to do the upgrade later I:

  1. took an image of my C partition
  2. applied the Windows 10 upgrade
  3. restored the image from step 1

The laptops are the same as I started with but the computers are now registered as official so when I do decide to go W10 I can wipe and install a fresh W10 from the iso at no charge.


Just last week I lucked into a "Windows 10 update ruined my PC." A relative told me this and I wanted this one to see what it was.

Nope. Was not what they thought it was. In this case the video mode was not optimum and an update was pending but would not install.

For a very good reason. On boot there was a clue given. "Press a key to skip disk check...." And no disk check would happen. Right or wrong I've seen this since Windows NT (for some that would be Windows XP.)

I opened a command prompt and typed in CHKDSK C: /F /R /X and then rebooted. The disk check ran, corrected some errors, the update installed, and rebooted to find the machine back to normal.

-> And here lies a huge problem. I call it the toaster problem. We have reached the point that folk expect a Windows PC to just work without having to know anything about this beast.

Nothing could be further from reality.

When you fix yours, share what it was.