How to fix
Microsoft Office installation error 0-2035
on Windows

Every time I try to install Microsoft Office Professional 2021, I keep receiving an error 0-2035. When I tried to install Office 365, I encountered the same problem. 

Error 0-2035 is one of the most irritating errors that users encounter when trying to install or update Office. It usually makes the whole installation hang or fail without much explanation of its cause. Users reported being confronted with this error while trying to install versions of the suite such as Office 365, Office 2019, and such others; the error therefore blocks one's access to the basic useful tools in the suite, such as Word, Excel, and PowerPoint.

Error 0-2035 is most frequently due to leftover files from previous Office installs. If the user has removed any older iteration of Office and has some leftover files or registry entries, these can conflict with the new installation. This is likely to cause confusion for the installer, and it may even fail.

Office error 0-2035 may result from corrupted installation files or incompletely downloaded installations, especially in cases where there was damage in the .pkg installer package itself. Other factors include but are not limited to a lack of administrative permissions and conflicts with antivirus or firewall settings.

The error 0-2035, apart from file conflicts, may be seated on higher ground, such as uninstalled or missing crucial Windows updates which should allow installation to sail through easily. Sometimes this may be due to network issues or incorrectly configured system settings disrupting the connection with Microsoft servers and thus getting the installation hung in the middle.

In general, Office error 0-2035 is resolved by cleaning up any leftover files from old installations, which might require tool-based accomplishment with the Office Uninstall Support Tool among other methods that ensure all the residual files have been cleaned.

The other common solutions involve repairing corrupted files, ensuring the installer downloaded is from a trusted source, and checking for Windows updates. Disabling temporarily antivirus or running the installer as an administrator might just work to get around that problem in some cases.

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Fix 1. Uninstall previous versions of Office

Conflicts with older versions of Office often cause error 0-2035. Completely removing previous installations helps avoid these conflicts during the new installation process.

• Type PowerShell in Windows search.
• Right-click on the result and pick Run as administrator.
• When UAC shows up, click Yes.
• In the new window copy and paste the following command, pressing Enter after:
  Get-AppxPackage -name “Microsoft.Office.Desktop” | Remove-AppxPackage
• Restart your system.
• Go to Microsoft Store and download the newest version of MS Office.

Fix 2. Use Microsoft Support and Recovery Assistant

Old files from past installations might remain on your system, which can mess up the new Office setup. The official Microsoft Uninstall Support Tool helps get rid of all leftovers from older versions.

• Open your browser and go to the official Microsoft support website.
• Scroll down and click Download under Uninstall and reinstall Office.
• Once downloaded, double-click SetupProd_OffScrub.exe to launch it.
• When prompted, click Install.
• Once installed, launch Microsoft Support and Recovery Assistant.
• Select Office & Office Apps and click Next.
• Next, pick I have Office 365 subscription, but I'm having trouble installing it and click Next.
• Click Yes to begin a scan.
• Follow instructions after the scan is finished.

Fix 3. Repair corrupted system files

Corrupted system files can disrupt the Office installation process, triggering Office error 0-2035. In this case, running SFC and DISM scans would help:

• Type cmd in Windows search.
• Right-click on the Command Prompt result and select Run as administrator.
• When the UAC window pops up, click Yes.
• In the Command Prompt window, paste the following command and press Enter:
  sfc /scannow
• Wait for the scan to complete.
• Once the SFC scan is finished, run the following set of DISM commands, pressing Enter after each one:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• After completing the DISM commands, restart your device.

Fix 4. Try installing in Clean Boot state

Clean Boot can help you if there's other software that's interfering with the installation process.

• Type msconfig in the Windows search box and press Enter.
• Pick the Services tab.
• Mark Hide all Microsoft services and select Disable all.
• Select the Startup tab and click Open Task Manager.
• In the Task Manager, right-click on each of the items and select Disable, then close the Task Manager.
• Go to the Boot tab, mark the Safe Boot option, then click Apply and OK.
• On the System Configuration window, click OK.
• Restart your computer and attempt to install/update Office.

Fix 5. Run the Office installer as an administrator

Insufficient permissions can prevent certain files from being installed, leading to error 0-2035. Running the installer as an administrator grants the necessary permissions.

• Right-click the Office installation file.
• Select Run as administrator.
• Follow the prompts to complete the installation.

Fix 6. Update Windows

Old Windows versions might miss important updates needed for installing Office correctly, which could lead to errors like 0-2035. Updating Windows often solves this problem.

• Type Updates in the Windows search bar and hit Enter.
• If updates are pending, click Download and install. Otherwise, click Check for updates.
• Make sure you choose to install optional updates as well.
• Restart your system to implement the changes.

Fix 7. Download a fresh copy of the Office installer

If the installation file is broken or has missing parts, getting a new copy from the Microsoft website will probably solve the problem.

• Visit the official Microsoft Office website.
• Sign in and download the latest version of Office.
• Run the installer and complete the setup.