'%3e%3cpath%20d='M8%200C12.4183%200%2016%203.58172%2016%208C16%2012.4183%2012.4183%2016%208%2016C3.58172%2016%200%2012.4183%200%208C0%203.58172%203.58172%200%208%200ZM11.6162%204.38379C11.2257%203.99337%2010.5927%203.99338%2010.2021%204.38379L8%206.58594L5.79785%204.38379C5.40732%203.99334%204.77429%203.99329%204.38379%204.38379C3.99331%204.77429%203.99335%205.40733%204.38379%205.79785L6.58594%208L4.38379%2010.2021C3.99348%2010.5927%203.99341%2011.2257%204.38379%2011.6162C4.77426%2012.0066%205.40734%2012.0065%205.79785%2011.6162L8%209.41406L10.2021%2011.6162C10.5927%2012.0066%2011.2257%2012.0067%2011.6162%2011.6162C12.0067%2011.2257%2012.0066%2010.5927%2011.6162%2010.2021L9.41406%208L11.6162%205.79785C12.0066%205.40735%2012.0066%204.77429%2011.6162%204.38379Z'%20fill='%23080E17'%20fill-opacity='0.46'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_3761_713'%3e%3crect%20width='16'%20height='16'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
How to Fix Microsoft 365 or Office 2021 Installation Error 30175-45
Question details
The user needs to resolve error code 30175-45 which prevents the successful installation of Microsoft 365 or Office 2021.
- Product
- Microsoft 365 and Office 2021
- Device & OS
- not provided
- Scenario
- Installing a newly licensed version of Microsoft 365 or Office 2021 on a system.
- Observed behavior
- The installation fails with error code 30175-45 due to conflicts with older Office versions, pre-installed trials, or lingering Click-to-Run components.
Ensure you have your Microsoft account credentials ready and save any open work, as you will need to completely uninstall existing Office programs and restart your computer.
Remove Conflicting Office Installations Using the Microsoft SaRA Tool
Use the official Microsoft Support and Recovery Assistant (SaRA) to thoroughly remove all traces of older Office versions and trials before reinstalling.
Standard uninstall methods often leave behind background Click-to-Run services or registry keys that trigger error 30175-45. Using Microsoft's dedicated uninstallation tool ensures a completely clean slate.
Visit https://aka.ms/SaRA-officeUninstallFromPC to download the Microsoft Support and Recovery Assistant uninstallation tool.
Launch the downloaded application and follow the on-screen prompts to detect and select all existing Office installations, including any pre-installed trials (such as those on Dell or other OEM PCs).
Once the tool finishes removing the conflicting software, restart your PC to fully clear the Click-to-Run components from memory.
Go to https://account.microsoft.com/services or https://www.office.com/ and log in using the exact Microsoft account associated with your Microsoft 365 or Office 2021 license.
Locate your product on the dashboard, click 'Install', and follow the prompts to complete a fresh, error-free installation.
Try WPS Office to Avoid Complex Installation Errors
If you are tired of dealing with installation conflicts, registry errors, and licensing issues, consider switching to WPS Office. It provides a lightweight, free alternative that installs in seconds and offers a highly familiar interface.
- 1. Download WPS Office: Visit the official WPS Office website and click the free download button.
- 2. Install the Software: Run the lightweight installer file. The installation takes just a few clicks and finishes rapidly without conflicting with other software.
- 3. Open Your Files Immediately: Launch WPS Office and instantly open your existing Word, Excel, or PowerPoint files to resume your work.
Frequently Asked Questions
Why am I getting error 30175-45 when installing Office?
Error 30175-45 usually occurs because older Office installations, pre-installed trial versions, or background Click-to-Run components are blocking your new Microsoft 365 or Office 2021 setup.
Will uninstalling Office delete my Word and Excel files?
No, uninstalling Office only removes the application files. Your personal documents, spreadsheets, and presentations will remain safely untouched on your computer's hard drive.
Can I have Microsoft 365 and Office 2021 installed at the same time?
Installing both on the same computer is not recommended and often leads to licensing conflicts and installation errors like 30175-45. It is best to choose one licensed product and completely uninstall the other.
