Fix missing bluetooth icon on task bar- windows 11

1. Press start key, 

2. type Settings 

3. click Bluetooth & devices 

4. click Devices 

5. click More Bluetooth Settings 

6. click Show the Bluetooth Icon in the 

allow windows update through windows firewall (windows 11)

1. open windows defender firewall

2. click outgoing rules

3. create new rule

    a. select custom

    b. click next button

    c. next to services click customize

    d. select 'apply to this service'

    e. select Windows update (wuauserv)

    f. click ok

    g. click next        

4. Protocols and ports 

    a. select protocol type: TCP

    b. select local port: specific ports

    c. enter: 49152-65535

    d. select remote port: specific ports

    e. enter: 443

    f. click next

5. Scope

a. find Remote IP address

b. select 'these UP addresses'

c. click add button 

d. click 'This IP address of subnet'

e. enter: 20.242.39.171

f. click ok button, 

        (Note this IP address connection was found by observing windows update, and resolves to Microsoft, Datacentre, Chicago. 52.252.180.154 was also noted but update seems to work with only 20.242.39.171, note IP addresses may change in future and these don't seem linked to URLs)

6. Action (General tab):

b. set allow the connection

        b. click next

7. Profile: (tab: Advanced)

a. untick Domain 

b. untick Private 

 (note your external facing connection should be set to public for minimal privileges)

8. Name: give the rule a name 'custom windows update'

    a. click finish

Now try: Setting->Windows update->Check for updates 

You can then toggle this new rule to enabled / disabled the outgoing Windows update connection as needed.

enable developer mode in excel

1. open File 
2. select Options 
3. select Customize Ribbon
4. under Main Tabs
5. select Developer check box.
6. select ok

restoring files from broken USB drive showing as raw partition

 a) If you can still see a raw partition on the usb drive
1. use TestDisk to recover the files

b) The drive is likely unfixable but TestDisk can also restore a partition from raw:
1. https://www.cgsecurity.org/testdisk_doc/repairing_filesystem.html

useful windows edge shortcuts

• ctrl+w close current tab
• ctrl+shift+t reopen last closed tab

windows 11, explorer. change right mouse menu back to default context menu

1. open regedit
2. goto HKEY_CURRENT_USER\SOFTWARE\CLASSES\CLSID\
3. make key {86ca1aa0-34aa-4e8b-a509-50c905bae2a2}
4. inside that key make new key InprocServer32
5. double click default, leave blank, 
6. press ok to save it
7. restart windows

No display or USB with KVM

1. check cable connections
2. try with KVM directly powered not passive