Delete Windows Server Backups
We can delete older backups and free the space occupied by them using the following two ways: 1. Deleting System State Backup: wbadmin delete systemstatebackup –keepversions:10 The above command will keep the latest 10 versions and delete the rest all the system state backups. 2. Deleting other backups: Backup application stores multiple backup versions in […]
PFX to key and crt in PEM
Extract Private Key: The following command will extract private key from .pfx file. You can find the private key in file named private_key.pem. # openssl pkcs12 -in myfile.pfx -nocerts -out private_key.pem -nodes Enter Import Password: MAC verified OK Extract Certificate: The following command will extract certificate from .pfx file. You can find the certificate […]
Subnet cheat-sheet
Subnet Mask Cheat Sheet See also RFC 1878. Addresses Hosts Netmask Amount of a Class C /30 4 2 255.255.255.252 1/64 /29 8 6 255.255.255.248 1/32 /28 16 14 255.255.255.240 1/16 /27 32 30 255.255.255.224 1/8 /26 64 62 255.255.255.192 1/4 /25 128 126 255.255.255.128 1/2 /24 256 254 255.255.255.0 1 /23 512 510 255.255.254.0 […]
The trust relationship between this workstation and the primary domain failed
Powershell: Reset-ComputerMachinePassword [-Credential ] [-Server ] Cmd: netdom.exe resetpwd /s:<server> /ud:<user> /pd:* <server> = a domain controller in the joined domain <user> = DOMAIN\User format with rights to change the computer password
Remote Assistance suddenly stop working
I met a strange issue with Remote Assistance: I couldn’t connect with msra to several PCs. But it worked before. After some investigation I found that if my user in the Local Administrators group – it works. After googling I supposed it’s related to DCOM and found this: https://support.microsoft.com/en-us/kb/884910 So, the resolution for me was […]
Exchange + Delete recoverable items from a mailbox
1. Check for the statistics of recoverable items folder: Get-MailboxFolderStatistics -Identity “FirstName LastName” -FolderScope RecoverableItems | Format-List 2) This command will delete items from the Recoverable items folder. Search-Mailbox -Identity “FirstName LastName” -SearchDumpsterOnly -DeleteContent
Hotmail + form to remove IPs from the blacklist
https://support.microsoft.com/en-us/getsupport?oaspworkflow=start_1.0.0.0&wfname=capsub&productkey=edfsmsbl3&ccsid=635646486111579910
VMware player + registry clean + incorrect uninstall
Delete these keys (UpgradeCodes helps me): VMware Player 2.x/3.x/4.x/5.x/6.x/7.x and Workstation Player 12.x HKEY_CLASSES_ROOT\Installer\Features\AE11A35A5900F39468AF1AE5A8684A50 HKEY_CLASSES_ROOT\Installer\Products\AE11A35A5900F39468AF1AE5A8684A50 HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Features\AE11A35A5900F39468AF1AE5A8684A50 HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\AE11A35A5900F39468AF1AE5A8684A50 HKEY_CLASSES_ROOT\Installer\Products\7A26F0EA2A1AF704F9C48439B99DDAD8 HKEY_CLASSES_ROOT\Installer\Products\7A79579133DA8984D9E8376086814B46 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\AE11A35A5900F39468AF1AE5A8684A50 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{A53A11EA-0095-493F-86FA-A15E8A86A405} HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\3F935F414A4C79542AD9C8D157A3CC39 HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.
A LCD-screen from a broken laptop + universal controller
I bought a universal controller for LCD and connect it to a free LCD-screen from an old laptop. There some steps: See the manual for LCD-screen and find voltage (+3.3V for laptop’s LCD) and resolution (1366×768). Set the jumpers on the controller for 3.3V. Connect cables from the controller to the LCD. Download a firmware […]