How to Fix Something Went Wrong Error (Tag 7q6ch) in Microsoft Office.

The "Something went wrong" error with tag 7q6ch when signing into Microsoft Office apps like Outlook, Word, and Excel is an absolute nightmare! It prevents access to your account, blocks data synchronization, and can even stop the application from launching before you even get a chance to sign into it. The issue affects Windows 10 and Windows 11 quite often pops up alongside errors like 2150105345.

How to Fix Something Went Wrong Error (Tag 7q6ch) in Microsoft Office.

Resetting the cached login data forces Office to re-authenticate your account, often resolving sign-in issues.

Close all Microsoft Office applications.
Press Win + R, type %localappdata%\Microsoft\OneAuth, and delete all contents inside the folder.
Repeat the process for %localappdata%\Microsoft\IdentityCache.
Open any Office app and attempt to sign in again.

Make Sure the Microsoft Account Sign-In Assistant Is Running

This service is crucial for Office authentication. If it's inactive, enabling might help.

Press Win + R, type services.msc, and hit Enter.
Locate Microsoft Account Sign-In Assistant in the list.
If it’s stopped, right-click and select Start.
Right-click again, choose Properties and set Startup type to Automatic.

Repair the Office Installation

Corrupted Office files can trigger authentication errors. Repairing the installation may fix the issue.

Open the Control Panel and navigate to Programs > Programs and Features.
Select Microsoft Office, then click Change.
Choose Online Repair, then click Repair and follow the on-screen instructions.

Update Microsoft Office

Outdated software may cause authentication failures. Ensure Office is up to date.

Open any Office app (e.g., Microsoft Word).
Click File > Account.
Under Product Information, select Update Options > Update Now.
Restart the application after the update.

Check Network Connection

This is a pretty basic thing to check but I doubt it's what's causing your issues.

Windows 11

Type Troubleshoot in Windows Search and press Enter.
Select Other troubleshooters.
Run the Network & Internet troubleshooter and apply the suggested fixes.
Restart your computer and retry signing in.

Windows 10

Go to Settings > Network & Internet.
In Advanced network settings, click Network troubleshooter.
Follow the on-screen instructions to apply fixes.

Run System File Checker (SFC) and DISM Scans

Damaged system files can interfere with Office authentication. Running these scans may help.

Type cmd in Windows Search, right-click Command Prompt, and select Run as administrator.
Run the following command:

sfc /scannow

After the scan completes, run these commands one by one:

DISM /Online /Cleanup-Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

Restart your computer.

Reinstall Microsoft Office

If all else fails, reinstalling Office can provide a fresh start.

Open Apps & Features (Windows 11) or Programs and Features (Windows 10).
Locate Microsoft Office, click Uninstall, and confirm the action.
Open File Explorer and delete the following folder:

C:\Program Files\Microsoft Office

Press Win + R, type regedit, and press Enter.
Navigate to these registry locations and delete the corresponding folders:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppVISV

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun

Computer\HKEY_CURRENT_USER\Software\Microsoft\Office

Restart your computer.
Visit the Microsoft Office download page to reinstall Office.

What Causes Office 7q6ch Error

For most people this is what is causing this error message and ones similar to it.

Issues with the Microsoft Account Sign-In Assistant or Web Account Manager services.
Network connectivity problems preventing successful authentication.
Corrupt cache files in the OneAuth or IdentityCache folders.
Conflicts with recent Office updates or system file corruption.
Organizational policies enforcing conditional access restrictions.

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