After investigation of this particular issue, it turns out that the 0x426-0x0 error code with Microsoft Office can occur due to multiple causes. Here’s a shortlist of potential culprits:
Method 1: Enabling the Click-to-Run Service
If you see this error code coming up when you attempt any program from the Office suite, the first thing you should do is make sure that the relevant service that handles this (Microsoft Office Click-To-Run) is permitted to run. In most cases, users that encountered the 0x426-0x0 error code have reported that in their case, the problem occurred because the Click to Run service was disabled from the Services screen. If this scenario is applicable, you’ll be able to fix the problem by accessing the Services screen and setting the status of the Microsoft Office Click to Run service to Automatic. Here’s a quick guide on how to do this: If the same problem is still occurring, move down to the next potential fix below.
Method 2: Repairing the Office Installation
As some affected users have confirmed, this problem can occur due to a corrupted Office installation. It can either be related to some files that all your applications share or it can be rooted in a Registry entry. This problem is typically reported to occur in situations where an AV (or a different type of scan) ended up quarantining some files belonging to the Microsoft Office suite or if there was an unexpected interruption while Office Programs were installing or updating. If one of the scenarios described above seems like it could be applicable, you should be able to fix the problem by repairing the Office installation along with every associated registry file. Here’s a quick guide on initiating a complete Microsoft Office repair via the Program and Features menu: If you still end up seeing the same 0x426-0x0 error code, move down to the next potential fix below.
Method 3: Uninstalling AVG TuneUp (if applicable)
As some affected users have reported, this problem is often caused by a 3rd party utility released by AVG called AVG TuneUp Tool. According to some affected users, this maintenance 3rd party utility has the potential of interfering with quite a few Office programs by tampering with heir cached data. If this scenario is applicable and you have AVG Tune Up (or an equivalent tool) installed on your system, you should be able to fix this problem by uninstalling the problematic 3rd party tool and restarting your computer. Here’s a quick guide on how to do this: If the same error code 0x426-0x0 is still appearing when you attempt to open an Office application, move down to the next potential fix below.
Method 4: Uninstalling Old Office Installation/s
According to some affected users have confirmed, the error code 0x426-0x0 can also occur when you have 2 conflicting Office versions that are attempting to use the same registry keys. Typically, the error will occur when you try to open an Office app that’s using the same Registry files as an older installation. If this scenario is applicable, you should be able to fix this problem by removing any old Office installation file that you no longer have any use for and you suspect might be contributing to the apparition of this error code. A lot of affected users that were dealing with this problem have confirmed that they were finally able to fix the problem after uninstalling and removing any remnant files that might be triggering the error code 0x426-0x0. Here’s a quick guide on how to do this:
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