How to Fix Microsoft Office Error 30145-13

1. Reset the Store cache. Open the Microsoft Store, go to settings, and choose to reset the cache, then restart.
2. Sign out and back in. Log out of your Microsoft account in the Store and sign back in to refresh your license token.
3. Reset Store app data. Press Windows + R, type wsreset.exe, and press Enter. The Store reopens once the reset finishes.
4. Update Windows. Settings > Update & Security > Windows Update. Missing patches often break installers in ways that look unrelated.

Handle network and proxy interference

If you're on a corporate or campus network, a proxy or firewall is a likely suspect. The Office installer pulls components from Microsoft's servers mid-install, and a blocked request shows up as 30145-13. Work through these:

1. Try a different network. Tether to your phone or use home Wi-Fi to confirm the network is the issue. If the install completes elsewhere, the original network is filtering it.
2. Temporarily disable the proxy. Settings > Network & Internet > Proxy, and turn off any manual proxy for the duration of the install.
3. Whitelist Microsoft's install endpoints. On managed networks, ask IT to allow the Office Content Delivery Network domains so the installer can fetch what it needs.
4. Use a wired connection. A flaky wireless link can corrupt the streamed install files; Ethernet is more reliable for a clean download.

If the install fails at the exact same percentage every time on one network but sails through on another, stop troubleshooting your PC. The problem is the network filtering the install, not your computer.

Common mistakes to avoid

• Leaving antivirus off after the install. Disabling it is a diagnostic step, not a fix. Re-enable it the moment Office is installed.
• Not removing leftover Office files. A standard uninstall leaves folders behind that collide with the new install. Use the Support and Recovery Assistant for a truly clean removal.
• Ignoring the temp folder. A full or locked %temp% directory can block the installer. Clear it before retrying.
• Running an old installer. Always download a fresh copy from your Microsoft account rather than reusing a setup file that may itself be corrupted — the original cause of many 30145-13 errors.

How 30145-13 differs from related Office errors

Office install errors look interchangeable but they aren't, and confusing them sends you down the wrong path. Here's how 30145-13 sits next to its cousins:

If your code is genuinely 30145-13, the win is usually in the install environment — connection, free space, and security software — rather than deep Windows repair. Why this matters: matching the error to its real cause is the difference between a ten-minute fix and an hour of unrelated scans.

A clean-slate install routine that just works

When you've fought the error more than once, stop patching and do a deliberate clean install. This sequence resolves the stubborn cases:

1. Run the Support and Recovery Assistant to fully remove Office, including leftover folders and registry keys.
2. Restart the PC — non-negotiable, since it releases locked files.
3. Confirm 15 GB+ free space and a stable, ideally wired, connection.
4. Add your Office folder to antivirus exclusions before installing.
5. Download a fresh installer from your Microsoft account and run it as administrator.

Doing these in order — rather than cherry-picking — is what separates a one-and-done install from the people who hit 30145-13 three times in a row.

Reading Office install logs when all else fails

If you've worked the whole list and 30145-13 still appears, the install logs will tell you precisely which file or step failed. They're plain text and easier to read than they look.

1. Press Windows + R, type %temp%, and press Enter to open the temp folder.
2. Look for files beginning with OfficeSetup or stored under a folder named after the install session.
3. Open the most recent log and search for the words error or failed.
4. The line near the failure usually names a specific file, registry key, or network resource — that's your real culprit.

A common find here is a single file the installer couldn't write because antivirus locked it, or a network resource it couldn't reach. The log turns guesswork into a pinpoint fix, which is exactly what you want after several failed attempts. Why this matters: instead of repeating the same broad steps, the log lets you attack the one thing that's actually broken.

How to prevent it next time

Most repeat cases trace back to two habits. First, keep 15-20 GB of free space on your system drive so installs and updates always have room to unpack. Second, install Office over a stable, ideally wired, connection with your antivirus exclusions already in place. Doing both turns a frustrating multi-attempt install into a single clean run.

Why this matters

Error 30145-13 isn't a sign your Office license is broken or your PC is failing. It's an installer that got blocked. Each step above removes one specific blocker — bad files, no space, a security tool, a stale Store cache, a filtering network — so you're not reinstalling Windows over a fixable hiccup. Run them in order and stop as soon as the install succeeds.